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Finding the Fourth Proportional to 630,468.27, 870,367.28 and 486,906.03

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Solution

The fourth proportional to 630,468.27, 870,367.28 and 486,906.03 is: 672,178.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,468.27 : 870,367.28 = 486,906.03 : x
  2. Step 2: Convert to fraction form
    630,468.27/870,367.28 = 486,906.03/x
  3. Step 3: Cross multiply
    630,468.27x = 870,367.28 × 486,906.03
  4. Step 4: Simplify right side
    630,468.27x = 423,787,074,512.17
  5. Step 5: Solve for x
    x = 423,787,074,512.17/630,468.27
  6. Step 6: Final answer
    x = 672,178.28

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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.