Home / 858,358.10-1,287,537.15-259,411.70

Finding the Fourth Proportional to 858,358.10, 1,287,537.15 and 259,411.70

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Solution

The fourth proportional to 858,358.10, 1,287,537.15 and 259,411.70 is: 389,117.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,358.10 : 1,287,537.15 = 259,411.70 : x
  2. Step 2: Convert to fraction form
    858,358.10/1,287,537.15 = 259,411.70/x
  3. Step 3: Cross multiply
    858,358.10x = 1,287,537.15 × 259,411.70
  4. Step 4: Simplify right side
    858,358.10x = 334,002,200,894.66
  5. Step 5: Solve for x
    x = 334,002,200,894.66/858,358.10
  6. Step 6: Final answer
    x = 389,117.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.