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Finding the Fourth Proportional to 623,689.32, 860,691.12 and 351,756.62

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Solution

The fourth proportional to 623,689.32, 860,691.12 and 351,756.62 is: 485,424.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,689.32 : 860,691.12 = 351,756.62 : x
  2. Step 2: Convert to fraction form
    623,689.32/860,691.12 = 351,756.62/x
  3. Step 3: Cross multiply
    623,689.32x = 860,691.12 × 351,756.62
  4. Step 4: Simplify right side
    623,689.32x = 302,753,801,681.65
  5. Step 5: Solve for x
    x = 302,753,801,681.65/623,689.32
  6. Step 6: Final answer
    x = 485,424.06

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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.