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Finding the Fourth Proportional to 713,576.70, 984,735.36 and 391,292.28

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Solution

The fourth proportional to 713,576.70, 984,735.36 and 391,292.28 is: 539,983.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,576.70 : 984,735.36 = 391,292.28 : x
  2. Step 2: Convert to fraction form
    713,576.70/984,735.36 = 391,292.28/x
  3. Step 3: Cross multiply
    713,576.70x = 984,735.36 × 391,292.28
  4. Step 4: Simplify right side
    713,576.70x = 385,319,344,211.02
  5. Step 5: Solve for x
    x = 385,319,344,211.02/713,576.70
  6. Step 6: Final answer
    x = 539,983.08

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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.