Home / 711,681.80-982,096.45-405,856.61

Finding the Fourth Proportional to 711,681.80, 982,096.45 and 405,856.61

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Solution

The fourth proportional to 711,681.80, 982,096.45 and 405,856.61 is: 560,068.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,681.80 : 982,096.45 = 405,856.61 : x
  2. Step 2: Convert to fraction form
    711,681.80/982,096.45 = 405,856.61/x
  3. Step 3: Cross multiply
    711,681.80x = 982,096.45 × 405,856.61
  4. Step 4: Simplify right side
    711,681.80x = 398,590,335,890.04
  5. Step 5: Solve for x
    x = 398,590,335,890.04/711,681.80
  6. Step 6: Final answer
    x = 560,068.19

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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.