Home / 879,780.60-1,320,334.34-643,732.28

Finding the Fourth Proportional to 879,780.60, 1,320,334.34 and 643,732.28

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Solution

The fourth proportional to 879,780.60, 1,320,334.34 and 643,732.28 is: 966,083.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,780.60 : 1,320,334.34 = 643,732.28 : x
  2. Step 2: Convert to fraction form
    879,780.60/1,320,334.34 = 643,732.28/x
  3. Step 3: Cross multiply
    879,780.60x = 1,320,334.34 × 643,732.28
  4. Step 4: Simplify right side
    879,780.60x = 849,941,835,050.50
  5. Step 5: Solve for x
    x = 849,941,835,050.50/879,780.60
  6. Step 6: Final answer
    x = 966,083.86

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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.