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Finding the Fourth Proportional to 713,756.27, 984,988.55 and 391,468.68

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Solution

The fourth proportional to 713,756.27, 984,988.55 and 391,468.68 is: 540,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,756.27 : 984,988.55 = 391,468.68 : x
  2. Step 2: Convert to fraction form
    713,756.27/984,988.55 = 391,468.68/x
  3. Step 3: Cross multiply
    713,756.27x = 984,988.55 × 391,468.68
  4. Step 4: Simplify right side
    713,756.27x = 385,592,168,462.29
  5. Step 5: Solve for x
    x = 385,592,168,462.29/713,756.27
  6. Step 6: Final answer
    x = 540,229.46

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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.