Home / 718,144.48-990,981.12-416,357.92

Finding the Fourth Proportional to 718,144.48, 990,981.12 and 416,357.92

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Solution

The fourth proportional to 718,144.48, 990,981.12 and 416,357.92 is: 574,540.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,144.48 : 990,981.12 = 416,357.92 : x
  2. Step 2: Convert to fraction form
    718,144.48/990,981.12 = 416,357.92/x
  3. Step 3: Cross multiply
    718,144.48x = 990,981.12 × 416,357.92
  4. Step 4: Simplify right side
    718,144.48x = 412,602,837,882.47
  5. Step 5: Solve for x
    x = 412,602,837,882.47/718,144.48
  6. Step 6: Final answer
    x = 574,540.15

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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.