Home / 432,687,814.20-649,031,721.30-389,605,663.80

Finding the Fourth Proportional to 432,687,814.20, 649,031,721.30 and 389,605,663.80

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Solution

The fourth proportional to 432,687,814.20, 649,031,721.30 and 389,605,663.80 is: 584,408,495.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,687,814.20 : 649,031,721.30 = 389,605,663.80 : x
  2. Step 2: Convert to fraction form
    432,687,814.20/649,031,721.30 = 389,605,663.80/x
  3. Step 3: Cross multiply
    432,687,814.20x = 649,031,721.30 × 389,605,663.80
  4. Step 4: Simplify right side
    432,687,814.20x = 252,866,434,604,343,104
  5. Step 5: Solve for x
    x = 252,866,434,604,343,104/432,687,814.20
  6. Step 6: Final answer
    x = 584,408,495.70

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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.