Home / 687,745,720.10-1,031,618,580.15-442,857,707.30

Finding the Fourth Proportional to 687,745,720.10, 1,031,618,580.15 and 442,857,707.30

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Solution

The fourth proportional to 687,745,720.10, 1,031,618,580.15 and 442,857,707.30 is: 664,286,560.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,745,720.10 : 1,031,618,580.15 = 442,857,707.30 : x
  2. Step 2: Convert to fraction form
    687,745,720.10/1,031,618,580.15 = 442,857,707.30/x
  3. Step 3: Cross multiply
    687,745,720.10x = 1,031,618,580.15 × 442,857,707.30
  4. Step 4: Simplify right side
    687,745,720.10x = 456,860,239,213,310,272
  5. Step 5: Solve for x
    x = 456,860,239,213,310,272/687,745,720.10
  6. Step 6: Final answer
    x = 664,286,560.95

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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.