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Finding the Fourth Proportional to 710,915.55, 981,063.54 and 388,627.08

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Solution

The fourth proportional to 710,915.55, 981,063.54 and 388,627.08 is: 536,305.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,915.55 : 981,063.54 = 388,627.08 : x
  2. Step 2: Convert to fraction form
    710,915.55/981,063.54 = 388,627.08/x
  3. Step 3: Cross multiply
    710,915.55x = 981,063.54 × 388,627.08
  4. Step 4: Simplify right side
    710,915.55x = 381,267,858,844.66
  5. Step 5: Solve for x
    x = 381,267,858,844.66/710,915.55
  6. Step 6: Final answer
    x = 536,305.41

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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.