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Finding the Fourth Proportional to 865,709.70, 1,298,564.55 and 802,724.10

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Solution

The fourth proportional to 865,709.70, 1,298,564.55 and 802,724.10 is: 1,204,086.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,709.70 : 1,298,564.55 = 802,724.10 : x
  2. Step 2: Convert to fraction form
    865,709.70/1,298,564.55 = 802,724.10/x
  3. Step 3: Cross multiply
    865,709.70x = 1,298,564.55 × 802,724.10
  4. Step 4: Simplify right side
    865,709.70x = 1,042,389,059,690.66
  5. Step 5: Solve for x
    x = 1,042,389,059,690.66/865,709.70
  6. Step 6: Final answer
    x = 1,204,086.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.