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Finding the Fourth Proportional to 611,569.60, 917,354.40 and 162,289.60

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Solution

The fourth proportional to 611,569.60, 917,354.40 and 162,289.60 is: 243,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,569.60 : 917,354.40 = 162,289.60 : x
  2. Step 2: Convert to fraction form
    611,569.60/917,354.40 = 162,289.60/x
  3. Step 3: Cross multiply
    611,569.60x = 917,354.40 × 162,289.60
  4. Step 4: Simplify right side
    611,569.60x = 148,877,078,634.24
  5. Step 5: Solve for x
    x = 148,877,078,634.24/611,569.60
  6. Step 6: Final answer
    x = 243,434.40

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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.