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Finding the Fourth Proportional to 1,244,470.32, 1,866,749.21 and 711,746.28

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Solution

The fourth proportional to 1,244,470.32, 1,866,749.21 and 711,746.28 is: 1,067,644.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244,470.32 : 1,866,749.21 = 711,746.28 : x
  2. Step 2: Convert to fraction form
    1,244,470.32/1,866,749.21 = 711,746.28/x
  3. Step 3: Cross multiply
    1,244,470.32x = 1,866,749.21 × 711,746.28
  4. Step 4: Simplify right side
    1,244,470.32x = 1,328,651,802,351.71
  5. Step 5: Solve for x
    x = 1,328,651,802,351.71/1,244,470.32
  6. Step 6: Final answer
    x = 1,067,644.43

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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.