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Finding the Fourth Proportional to 700,348.38, 966,516.71 and 428,330.94

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Solution

The fourth proportional to 700,348.38, 966,516.71 and 428,330.94 is: 591,118.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,348.38 : 966,516.71 = 428,330.94 : x
  2. Step 2: Convert to fraction form
    700,348.38/966,516.71 = 428,330.94/x
  3. Step 3: Cross multiply
    700,348.38x = 966,516.71 × 428,330.94
  4. Step 4: Simplify right side
    700,348.38x = 413,989,005,153.92
  5. Step 5: Solve for x
    x = 413,989,005,153.92/700,348.38
  6. Step 6: Final answer
    x = 591,118.68

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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.