Home / 869,335.38-1,199,740.41-487,386.90

Finding the Fourth Proportional to 869,335.38, 1,199,740.41 and 487,386.90

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Solution

The fourth proportional to 869,335.38, 1,199,740.41 and 487,386.90 is: 672,626.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,335.38 : 1,199,740.41 = 487,386.90 : x
  2. Step 2: Convert to fraction form
    869,335.38/1,199,740.41 = 487,386.90/x
  3. Step 3: Cross multiply
    869,335.38x = 1,199,740.41 × 487,386.90
  4. Step 4: Simplify right side
    869,335.38x = 584,737,759,234.63
  5. Step 5: Solve for x
    x = 584,737,759,234.63/869,335.38
  6. Step 6: Final answer
    x = 672,626.21

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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.