Home / 719,103.84-992,366.16-396,823.20

Finding the Fourth Proportional to 719,103.84, 992,366.16 and 396,823.20

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Solution

The fourth proportional to 719,103.84, 992,366.16 and 396,823.20 is: 547,617.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,103.84 : 992,366.16 = 396,823.20 : x
  2. Step 2: Convert to fraction form
    719,103.84/992,366.16 = 396,823.20/x
  3. Step 3: Cross multiply
    719,103.84x = 992,366.16 × 396,823.20
  4. Step 4: Simplify right side
    719,103.84x = 393,793,915,182.91
  5. Step 5: Solve for x
    x = 393,793,915,182.91/719,103.84
  6. Step 6: Final answer
    x = 547,617.59

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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.