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Finding the Fourth Proportional to 719,017.54, 992,264.96 and 396,748.39

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Solution

The fourth proportional to 719,017.54, 992,264.96 and 396,748.39 is: 547,524.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,017.54 : 992,264.96 = 396,748.39 : x
  2. Step 2: Convert to fraction form
    719,017.54/992,264.96 = 396,748.39/x
  3. Step 3: Cross multiply
    719,017.54x = 992,264.96 × 396,748.39
  4. Step 4: Simplify right side
    719,017.54x = 393,679,525,333.41
  5. Step 5: Solve for x
    x = 393,679,525,333.41/719,017.54
  6. Step 6: Final answer
    x = 547,524.23

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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.