Home / 1,238,721.30-1,858,081.95-397,358.10

Finding the Fourth Proportional to 1,238,721.30, 1,858,081.95 and 397,358.10

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Solution

The fourth proportional to 1,238,721.30, 1,858,081.95 and 397,358.10 is: 596,037.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,721.30 : 1,858,081.95 = 397,358.10 : x
  2. Step 2: Convert to fraction form
    1,238,721.30/1,858,081.95 = 397,358.10/x
  3. Step 3: Cross multiply
    1,238,721.30x = 1,858,081.95 × 397,358.10
  4. Step 4: Simplify right side
    1,238,721.30x = 738,323,913,296.30
  5. Step 5: Solve for x
    x = 738,323,913,296.30/1,238,721.30
  6. Step 6: Final answer
    x = 596,037.15

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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.