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Finding the Fourth Proportional to 672,650.64, 928,220.85 and 386,152.02

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Solution

The fourth proportional to 672,650.64, 928,220.85 and 386,152.02 is: 532,868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,650.64 : 928,220.85 = 386,152.02 : x
  2. Step 2: Convert to fraction form
    672,650.64/928,220.85 = 386,152.02/x
  3. Step 3: Cross multiply
    672,650.64x = 928,220.85 × 386,152.02
  4. Step 4: Simplify right side
    672,650.64x = 358,434,356,233.62
  5. Step 5: Solve for x
    x = 358,434,356,233.62/672,650.64
  6. Step 6: Final answer
    x = 532,868.53

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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.