Home / 429,496.20-644,244.30-405,001.80

Finding the Fourth Proportional to 429,496.20, 644,244.30 and 405,001.80

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Solution

The fourth proportional to 429,496.20, 644,244.30 and 405,001.80 is: 607,502.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,496.20 : 644,244.30 = 405,001.80 : x
  2. Step 2: Convert to fraction form
    429,496.20/644,244.30 = 405,001.80/x
  3. Step 3: Cross multiply
    429,496.20x = 644,244.30 × 405,001.80
  4. Step 4: Simplify right side
    429,496.20x = 260,920,101,139.74
  5. Step 5: Solve for x
    x = 260,920,101,139.74/429,496.20
  6. Step 6: Final answer
    x = 607,502.70

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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.