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Finding the Fourth Proportional to 406,043.20, 609,064.80 and 370,613.80

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Solution

The fourth proportional to 406,043.20, 609,064.80 and 370,613.80 is: 555,920.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,043.20 : 609,064.80 = 370,613.80 : x
  2. Step 2: Convert to fraction form
    406,043.20/609,064.80 = 370,613.80/x
  3. Step 3: Cross multiply
    406,043.20x = 609,064.80 × 370,613.80
  4. Step 4: Simplify right side
    406,043.20x = 225,727,819,974.24
  5. Step 5: Solve for x
    x = 225,727,819,974.24/406,043.20
  6. Step 6: Final answer
    x = 555,920.70

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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.