Home / 718,385.18-991,395.46-427,957.05

Finding the Fourth Proportional to 718,385.18, 991,395.46 and 427,957.05

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Solution

The fourth proportional to 718,385.18, 991,395.46 and 427,957.05 is: 590,594.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,385.18 : 991,395.46 = 427,957.05 : x
  2. Step 2: Convert to fraction form
    718,385.18/991,395.46 = 427,957.05/x
  3. Step 3: Cross multiply
    718,385.18x = 991,395.46 × 427,957.05
  4. Step 4: Simplify right side
    718,385.18x = 424,274,672,934.59
  5. Step 5: Solve for x
    x = 424,274,672,934.59/718,385.18
  6. Step 6: Final answer
    x = 590,594.97

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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.