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Finding the Fourth Proportional to 710,981.73, 981,115.07 and 388,627.65

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Solution

The fourth proportional to 710,981.73, 981,115.07 and 388,627.65 is: 536,284.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,981.73 : 981,115.07 = 388,627.65 : x
  2. Step 2: Convert to fraction form
    710,981.73/981,115.07 = 388,627.65/x
  3. Step 3: Cross multiply
    710,981.73x = 981,115.07 × 388,627.65
  4. Step 4: Simplify right side
    710,981.73x = 381,288,442,090.55
  5. Step 5: Solve for x
    x = 381,288,442,090.55/710,981.73
  6. Step 6: Final answer
    x = 536,284.44

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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.