Home / 879,766.60-1,320,313.34-643,718.28

Finding the Fourth Proportional to 879,766.60, 1,320,313.34 and 643,718.28

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Solution

The fourth proportional to 879,766.60, 1,320,313.34 and 643,718.28 is: 966,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,766.60 : 1,320,313.34 = 643,718.28 : x
  2. Step 2: Convert to fraction form
    879,766.60/1,320,313.34 = 643,718.28/x
  3. Step 3: Cross multiply
    879,766.60x = 1,320,313.34 × 643,718.28
  4. Step 4: Simplify right side
    879,766.60x = 849,909,832,285.86
  5. Step 5: Solve for x
    x = 849,909,832,285.86/879,766.60
  6. Step 6: Final answer
    x = 966,062.85

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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.