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Finding the Fourth Proportional to 717,492.75, 990,068.16 and 441,806.42

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Solution

The fourth proportional to 717,492.75, 990,068.16 and 441,806.42 is: 609,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,492.75 : 990,068.16 = 441,806.42 : x
  2. Step 2: Convert to fraction form
    717,492.75/990,068.16 = 441,806.42/x
  3. Step 3: Cross multiply
    717,492.75x = 990,068.16 × 441,806.42
  4. Step 4: Simplify right side
    717,492.75x = 437,418,464,375.25
  5. Step 5: Solve for x
    x = 437,418,464,375.25/717,492.75
  6. Step 6: Final answer
    x = 609,648.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.