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Finding the Fourth Proportional to 409,338.60, 614,007.90 and 406,714.20

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Solution

The fourth proportional to 409,338.60, 614,007.90 and 406,714.20 is: 610,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,338.60 : 614,007.90 = 406,714.20 : x
  2. Step 2: Convert to fraction form
    409,338.60/614,007.90 = 406,714.20/x
  3. Step 3: Cross multiply
    409,338.60x = 614,007.90 × 406,714.20
  4. Step 4: Simplify right side
    409,338.60x = 249,725,731,842.18
  5. Step 5: Solve for x
    x = 249,725,731,842.18/409,338.60
  6. Step 6: Final answer
    x = 610,071.30

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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.