Home / 861,671.97-1,188,333.18-539,411.40

Finding the Fourth Proportional to 861,671.97, 1,188,333.18 and 539,411.40

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Solution

The fourth proportional to 861,671.97, 1,188,333.18 and 539,411.40 is: 743,903.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,671.97 : 1,188,333.18 = 539,411.40 : x
  2. Step 2: Convert to fraction form
    861,671.97/1,188,333.18 = 539,411.40/x
  3. Step 3: Cross multiply
    861,671.97x = 1,188,333.18 × 539,411.40
  4. Step 4: Simplify right side
    861,671.97x = 641,000,464,290.25
  5. Step 5: Solve for x
    x = 641,000,464,290.25/861,671.97
  6. Step 6: Final answer
    x = 743,903.12

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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.