Home / 438,129,097.20-657,193,645.80-435,105,788.40

Finding the Fourth Proportional to 438,129,097.20, 657,193,645.80 and 435,105,788.40

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Solution

The fourth proportional to 438,129,097.20, 657,193,645.80 and 435,105,788.40 is: 652,658,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,129,097.20 : 657,193,645.80 = 435,105,788.40 : x
  2. Step 2: Convert to fraction form
    438,129,097.20/657,193,645.80 = 435,105,788.40/x
  3. Step 3: Cross multiply
    438,129,097.20x = 657,193,645.80 × 435,105,788.40
  4. Step 4: Simplify right side
    438,129,097.20x = 285,948,759,387,279,328
  5. Step 5: Solve for x
    x = 285,948,759,387,279,328/438,129,097.20
  6. Step 6: Final answer
    x = 652,658,682.60

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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.