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Finding the Fourth Proportional to 625,429, 863,184.66 and 396,007.62

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Solution

The fourth proportional to 625,429, 863,184.66 and 396,007.62 is: 546,549.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,429 : 863,184.66 = 396,007.62 : x
  2. Step 2: Convert to fraction form
    625,429/863,184.66 = 396,007.62/x
  3. Step 3: Cross multiply
    625,429x = 863,184.66 × 396,007.62
  4. Step 4: Simplify right side
    625,429x = 341,827,702,827.11
  5. Step 5: Solve for x
    x = 341,827,702,827.11/625,429
  6. Step 6: Final answer
    x = 546,549.17

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1.5x scale

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.