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Finding the Fourth Proportional to 675,864.12, 932,900.22 and 389,575.56

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Solution

The fourth proportional to 675,864.12, 932,900.22 and 389,575.56 is: 537,734.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,864.12 : 932,900.22 = 389,575.56 : x
  2. Step 2: Convert to fraction form
    675,864.12/932,900.22 = 389,575.56/x
  3. Step 3: Cross multiply
    675,864.12x = 932,900.22 × 389,575.56
  4. Step 4: Simplify right side
    675,864.12x = 363,435,125,630.62
  5. Step 5: Solve for x
    x = 363,435,125,630.62/675,864.12
  6. Step 6: Final answer
    x = 537,734.01

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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.