Home / 728,784.07-1,005,719.41-406,493.92

Finding the Fourth Proportional to 728,784.07, 1,005,719.41 and 406,493.92

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Solution

The fourth proportional to 728,784.07, 1,005,719.41 and 406,493.92 is: 560,960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,784.07 : 1,005,719.41 = 406,493.92 : x
  2. Step 2: Convert to fraction form
    728,784.07/1,005,719.41 = 406,493.92/x
  3. Step 3: Cross multiply
    728,784.07x = 1,005,719.41 × 406,493.92
  4. Step 4: Simplify right side
    728,784.07x = 408,818,823,358.52
  5. Step 5: Solve for x
    x = 408,818,823,358.52/728,784.07
  6. Step 6: Final answer
    x = 560,960.15

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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.