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Finding the Fourth Proportional to 675,214.79, 931,761.86 and 369,231.69

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Solution

The fourth proportional to 675,214.79, 931,761.86 and 369,231.69 is: 509,520.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,214.79 : 931,761.86 = 369,231.69 : x
  2. Step 2: Convert to fraction form
    675,214.79/931,761.86 = 369,231.69/x
  3. Step 3: Cross multiply
    675,214.79x = 931,761.86 × 369,231.69
  4. Step 4: Simplify right side
    675,214.79x = 344,036,006,311.18
  5. Step 5: Solve for x
    x = 344,036,006,311.18/675,214.79
  6. Step 6: Final answer
    x = 509,520.84

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Similar ratio
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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.