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Finding the Fourth Proportional to 717,014.67, 989,474.85 and 394,730.25

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Solution

The fourth proportional to 717,014.67, 989,474.85 and 394,730.25 is: 544,724.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,014.67 : 989,474.85 = 394,730.25 : x
  2. Step 2: Convert to fraction form
    717,014.67/989,474.85 = 394,730.25/x
  3. Step 3: Cross multiply
    717,014.67x = 989,474.85 × 394,730.25
  4. Step 4: Simplify right side
    717,014.67x = 390,575,654,909.21
  5. Step 5: Solve for x
    x = 390,575,654,909.21/717,014.67
  6. Step 6: Final answer
    x = 544,724.78

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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.