Home / 429,928,693.60-644,893,040.40-257,316,656.80

Finding the Fourth Proportional to 429,928,693.60, 644,893,040.40 and 257,316,656.80

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Solution

The fourth proportional to 429,928,693.60, 644,893,040.40 and 257,316,656.80 is: 385,974,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,928,693.60 : 644,893,040.40 = 257,316,656.80 : x
  2. Step 2: Convert to fraction form
    429,928,693.60/644,893,040.40 = 257,316,656.80/x
  3. Step 3: Cross multiply
    429,928,693.60x = 644,893,040.40 × 257,316,656.80
  4. Step 4: Simplify right side
    429,928,693.60x = 165,941,721,149,315,328
  5. Step 5: Solve for x
    x = 165,941,721,149,315,328/429,928,693.60
  6. Step 6: Final answer
    x = 385,974,985.20

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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.