Home / 719,115.05-992,381.69-396,834.48

Finding the Fourth Proportional to 719,115.05, 992,381.69 and 396,834.48

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Solution

The fourth proportional to 719,115.05, 992,381.69 and 396,834.48 is: 547,633.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,115.05 : 992,381.69 = 396,834.48 : x
  2. Step 2: Convert to fraction form
    719,115.05/992,381.69 = 396,834.48/x
  3. Step 3: Cross multiply
    719,115.05x = 992,381.69 × 396,834.48
  4. Step 4: Simplify right side
    719,115.05x = 393,811,272,904.76
  5. Step 5: Solve for x
    x = 393,811,272,904.76/719,115.05
  6. Step 6: Final answer
    x = 547,633.19

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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.