Home / 431,473,123.20-647,209,684.80-286,354,300.80

Finding the Fourth Proportional to 431,473,123.20, 647,209,684.80 and 286,354,300.80

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Solution

The fourth proportional to 431,473,123.20, 647,209,684.80 and 286,354,300.80 is: 429,531,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,473,123.20 : 647,209,684.80 = 286,354,300.80 : x
  2. Step 2: Convert to fraction form
    431,473,123.20/647,209,684.80 = 286,354,300.80/x
  3. Step 3: Cross multiply
    431,473,123.20x = 647,209,684.80 × 286,354,300.80
  4. Step 4: Simplify right side
    431,473,123.20x = 185,331,276,761,892,384
  5. Step 5: Solve for x
    x = 185,331,276,761,892,384/431,473,123.20
  6. Step 6: Final answer
    x = 429,531,451.20

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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.