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Finding the Fourth Proportional to 711,842.70, 982,342.98 and 389,552.97

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Solution

The fourth proportional to 711,842.70, 982,342.98 and 389,552.97 is: 537,583.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,842.70 : 982,342.98 = 389,552.97 : x
  2. Step 2: Convert to fraction form
    711,842.70/982,342.98 = 389,552.97/x
  3. Step 3: Cross multiply
    711,842.70x = 982,342.98 × 389,552.97
  4. Step 4: Simplify right side
    711,842.70x = 382,674,625,417.65
  5. Step 5: Solve for x
    x = 382,674,625,417.65/711,842.70
  6. Step 6: Final answer
    x = 537,583.13

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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.