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Finding the Fourth Proportional to 713,990.42, 1,069,527.62 and 398,615.30

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Solution

The fourth proportional to 713,990.42, 1,069,527.62 and 398,615.30 is: 597,108.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,990.42 : 1,069,527.62 = 398,615.30 : x
  2. Step 2: Convert to fraction form
    713,990.42/1,069,527.62 = 398,615.30/x
  3. Step 3: Cross multiply
    713,990.42x = 1,069,527.62 × 398,615.30
  4. Step 4: Simplify right side
    713,990.42x = 426,330,073,104.59
  5. Step 5: Solve for x
    x = 426,330,073,104.59/713,990.42
  6. Step 6: Final answer
    x = 597,108.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.