Home / 429,985,152,021.60-644,977,728,032.40-209,834,523,669.60

Finding the Fourth Proportional to 429,985,152,021.60, 644,977,728,032.40 and 209,834,523,669.60

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Solution

The fourth proportional to 429,985,152,021.60, 644,977,728,032.40 and 209,834,523,669.60 is: 314,751,785,504.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,985,152,021.60 : 644,977,728,032.40 = 209,834,523,669.60 : x
  2. Step 2: Convert to fraction form
    429,985,152,021.60/644,977,728,032.40 = 209,834,523,669.60/x
  3. Step 3: Cross multiply
    429,985,152,021.60x = 644,977,728,032.40 × 209,834,523,669.60
  4. Step 4: Simplify right side
    429,985,152,021.60x = 135,338,594,339,179,473,141,760
  5. Step 5: Solve for x
    x = 135,338,594,339,179,473,141,760/429,985,152,021.60
  6. Step 6: Final answer
    x = 314,751,785,504.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.