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Finding the Fourth Proportional to 710,915.85, 981,070.41 and 404,987.70

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Solution

The fourth proportional to 710,915.85, 981,070.41 and 404,987.70 is: 558,886.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,915.85 : 981,070.41 = 404,987.70 : x
  2. Step 2: Convert to fraction form
    710,915.85/981,070.41 = 404,987.70/x
  3. Step 3: Cross multiply
    710,915.85x = 981,070.41 × 404,987.70
  4. Step 4: Simplify right side
    710,915.85x = 397,321,448,883.96
  5. Step 5: Solve for x
    x = 397,321,448,883.96/710,915.85
  6. Step 6: Final answer
    x = 558,886.75

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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.