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Finding the Fourth Proportional to 675,174.60, 932,145.12 and 420,870.24

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Solution

The fourth proportional to 675,174.60, 932,145.12 and 420,870.24 is: 581,052.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,174.60 : 932,145.12 = 420,870.24 : x
  2. Step 2: Convert to fraction form
    675,174.60/932,145.12 = 420,870.24/x
  3. Step 3: Cross multiply
    675,174.60x = 932,145.12 × 420,870.24
  4. Step 4: Simplify right side
    675,174.60x = 392,312,140,369.23
  5. Step 5: Solve for x
    x = 392,312,140,369.23/675,174.60
  6. Step 6: Final answer
    x = 581,052.87

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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.