Home / 861,943.80-1,189,482.38-499,577.85

Finding the Fourth Proportional to 861,943.80, 1,189,482.38 and 499,577.85

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Solution

The fourth proportional to 861,943.80, 1,189,482.38 and 499,577.85 is: 689,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,943.80 : 1,189,482.38 = 499,577.85 : x
  2. Step 2: Convert to fraction form
    861,943.80/1,189,482.38 = 499,577.85/x
  3. Step 3: Cross multiply
    861,943.80x = 1,189,482.38 × 499,577.85
  4. Step 4: Simplify right side
    861,943.80x = 594,239,050,013.28
  5. Step 5: Solve for x
    x = 594,239,050,013.28/861,943.80
  6. Step 6: Final answer
    x = 689,417.40

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Double scale
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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.