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Finding the Fourth Proportional to 713,637.37, 984,842.40 and 391,346.71

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Solution

The fourth proportional to 713,637.37, 984,842.40 and 391,346.71 is: 540,070.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,637.37 : 984,842.40 = 391,346.71 : x
  2. Step 2: Convert to fraction form
    713,637.37/984,842.40 = 391,346.71/x
  3. Step 3: Cross multiply
    713,637.37x = 984,842.40 × 391,346.71
  4. Step 4: Simplify right side
    713,637.37x = 385,414,829,912.62
  5. Step 5: Solve for x
    x = 385,414,829,912.62/713,637.37
  6. Step 6: Final answer
    x = 540,070.97

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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.