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Finding the Fourth Proportional to 713,615.86, 984,803.39 and 391,306.73

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Solution

The fourth proportional to 713,615.86, 984,803.39 and 391,306.73 is: 540,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,615.86 : 984,803.39 = 391,306.73 : x
  2. Step 2: Convert to fraction form
    713,615.86/984,803.39 = 391,306.73/x
  3. Step 3: Cross multiply
    713,615.86x = 984,803.39 × 391,306.73
  4. Step 4: Simplify right side
    713,615.86x = 385,360,195,460.73
  5. Step 5: Solve for x
    x = 385,360,195,460.73/713,615.86
  6. Step 6: Final answer
    x = 540,010.70

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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.