Home / 718,514.64-991,544.20-396,238.16

Finding the Fourth Proportional to 718,514.64, 991,544.20 and 396,238.16

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Solution

The fourth proportional to 718,514.64, 991,544.20 and 396,238.16 is: 546,805.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,514.64 : 991,544.20 = 396,238.16 : x
  2. Step 2: Convert to fraction form
    718,514.64/991,544.20 = 396,238.16/x
  3. Step 3: Cross multiply
    718,514.64x = 991,544.20 × 396,238.16
  4. Step 4: Simplify right side
    718,514.64x = 392,887,649,366.67
  5. Step 5: Solve for x
    x = 392,887,649,366.67/718,514.64
  6. Step 6: Final answer
    x = 546,805.35

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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.