Home / 426,154,438.10-639,231,657.15-288,404,930.90

Finding the Fourth Proportional to 426,154,438.10, 639,231,657.15 and 288,404,930.90

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Solution

The fourth proportional to 426,154,438.10, 639,231,657.15 and 288,404,930.90 is: 432,607,396.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,154,438.10 : 639,231,657.15 = 288,404,930.90 : x
  2. Step 2: Convert to fraction form
    426,154,438.10/639,231,657.15 = 288,404,930.90/x
  3. Step 3: Cross multiply
    426,154,438.10x = 639,231,657.15 × 288,404,930.90
  4. Step 4: Simplify right side
    426,154,438.10x = 184,357,561,909,438,208
  5. Step 5: Solve for x
    x = 184,357,561,909,438,208/426,154,438.10
  6. Step 6: Final answer
    x = 432,607,396.35

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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.