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Finding the Fourth Proportional to 710,922.96, 981,071.28 and 388,632.96

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Solution

The fourth proportional to 710,922.96, 981,071.28 and 388,632.96 is: 536,312.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,922.96 : 981,071.28 = 388,632.96 : x
  2. Step 2: Convert to fraction form
    710,922.96/981,071.28 = 388,632.96/x
  3. Step 3: Cross multiply
    710,922.96x = 981,071.28 × 388,632.96
  4. Step 4: Simplify right side
    710,922.96x = 381,276,635,517.39
  5. Step 5: Solve for x
    x = 381,276,635,517.39/710,922.96
  6. Step 6: Final answer
    x = 536,312.17

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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.