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Finding the Fourth Proportional to 711,817.64, 982,211.22 and 425,276.84

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Solution

The fourth proportional to 711,817.64, 982,211.22 and 425,276.84 is: 586,824.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,817.64 : 982,211.22 = 425,276.84 : x
  2. Step 2: Convert to fraction form
    711,817.64/982,211.22 = 425,276.84/x
  3. Step 3: Cross multiply
    711,817.64x = 982,211.22 × 425,276.84
  4. Step 4: Simplify right side
    711,817.64x = 417,711,683,854.15
  5. Step 5: Solve for x
    x = 417,711,683,854.15/711,817.64
  6. Step 6: Final answer
    x = 586,824.01

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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.