Home / 432,687,836.70-649,031,755.05-389,605,686.30

Finding the Fourth Proportional to 432,687,836.70, 649,031,755.05 and 389,605,686.30

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Solution

The fourth proportional to 432,687,836.70, 649,031,755.05 and 389,605,686.30 is: 584,408,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,687,836.70 : 649,031,755.05 = 389,605,686.30 : x
  2. Step 2: Convert to fraction form
    432,687,836.70/649,031,755.05 = 389,605,686.30/x
  3. Step 3: Cross multiply
    432,687,836.70x = 649,031,755.05 × 389,605,686.30
  4. Step 4: Simplify right side
    432,687,836.70x = 252,866,462,356,748,736
  5. Step 5: Solve for x
    x = 252,866,462,356,748,736/432,687,836.70
  6. Step 6: Final answer
    x = 584,408,529.45

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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.