Home / 861,541.40-1,188,907.42-539,429.10

Finding the Fourth Proportional to 861,541.40, 1,188,907.42 and 539,429.10

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Solution

The fourth proportional to 861,541.40, 1,188,907.42 and 539,429.10 is: 744,399.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,541.40 : 1,188,907.42 = 539,429.10 : x
  2. Step 2: Convert to fraction form
    861,541.40/1,188,907.42 = 539,429.10/x
  3. Step 3: Cross multiply
    861,541.40x = 1,188,907.42 × 539,429.10
  4. Step 4: Simplify right side
    861,541.40x = 641,331,261,445.98
  5. Step 5: Solve for x
    x = 641,331,261,445.98/861,541.40
  6. Step 6: Final answer
    x = 744,399.82

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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.