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Finding the Fourth Proportional to 719,017.83, 992,265.36 and 396,748.68

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Solution

The fourth proportional to 719,017.83, 992,265.36 and 396,748.68 is: 547,524.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,017.83 : 992,265.36 = 396,748.68 : x
  2. Step 2: Convert to fraction form
    719,017.83/992,265.36 = 396,748.68/x
  3. Step 3: Cross multiply
    719,017.83x = 992,265.36 × 396,748.68
  4. Step 4: Simplify right side
    719,017.83x = 393,679,971,789.73
  5. Step 5: Solve for x
    x = 393,679,971,789.73/719,017.83
  6. Step 6: Final answer
    x = 547,524.63

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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.