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Finding the Fourth Proportional to 887,956.80, 1,332,032.40 and 859,963.20

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Solution

The fourth proportional to 887,956.80, 1,332,032.40 and 859,963.20 is: 1,290,038.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,956.80 : 1,332,032.40 = 859,963.20 : x
  2. Step 2: Convert to fraction form
    887,956.80/1,332,032.40 = 859,963.20/x
  3. Step 3: Cross multiply
    887,956.80x = 1,332,032.40 × 859,963.20
  4. Step 4: Simplify right side
    887,956.80x = 1,145,498,845,207.68
  5. Step 5: Solve for x
    x = 1,145,498,845,207.68/887,956.80
  6. Step 6: Final answer
    x = 1,290,038.94

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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.