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Finding the Fourth Proportional to 719,257.17, 992,570 and 396,967.26

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Solution

The fourth proportional to 719,257.17, 992,570 and 396,967.26 is: 547,812.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,257.17 : 992,570 = 396,967.26 : x
  2. Step 2: Convert to fraction form
    719,257.17/992,570 = 396,967.26/x
  3. Step 3: Cross multiply
    719,257.17x = 992,570 × 396,967.26
  4. Step 4: Simplify right side
    719,257.17x = 394,017,793,258.20
  5. Step 5: Solve for x
    x = 394,017,793,258.20/719,257.17
  6. Step 6: Final answer
    x = 547,812.12

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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.