Home / 687,748,812.10-1,031,623,218.15-442,860,799.30

Finding the Fourth Proportional to 687,748,812.10, 1,031,623,218.15 and 442,860,799.30

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Solution

The fourth proportional to 687,748,812.10, 1,031,623,218.15 and 442,860,799.30 is: 664,291,198.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,748,812.10 : 1,031,623,218.15 = 442,860,799.30 : x
  2. Step 2: Convert to fraction form
    687,748,812.10/1,031,623,218.15 = 442,860,799.30/x
  3. Step 3: Cross multiply
    687,748,812.10x = 1,031,623,218.15 × 442,860,799.30
  4. Step 4: Simplify right side
    687,748,812.10x = 456,865,482,966,347,264
  5. Step 5: Solve for x
    x = 456,865,482,966,347,264/687,748,812.10
  6. Step 6: Final answer
    x = 664,291,198.95

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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.