Home / 687,748,814.10-1,031,623,221.15-442,860,801.30

Finding the Fourth Proportional to 687,748,814.10, 1,031,623,221.15 and 442,860,801.30

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Solution

The fourth proportional to 687,748,814.10, 1,031,623,221.15 and 442,860,801.30 is: 664,291,201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,748,814.10 : 1,031,623,221.15 = 442,860,801.30 : x
  2. Step 2: Convert to fraction form
    687,748,814.10/1,031,623,221.15 = 442,860,801.30/x
  3. Step 3: Cross multiply
    687,748,814.10x = 1,031,623,221.15 × 442,860,801.30
  4. Step 4: Simplify right side
    687,748,814.10x = 456,865,486,358,176,128
  5. Step 5: Solve for x
    x = 456,865,486,358,176,128/687,748,814.10
  6. Step 6: Final answer
    x = 664,291,201.95

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Double scale
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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.