Home / 861,534.96-1,188,905.76-479,561.28

Finding the Fourth Proportional to 861,534.96, 1,188,905.76 and 479,561.28

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Solution

The fourth proportional to 861,534.96, 1,188,905.76 and 479,561.28 is: 661,787.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,534.96 : 1,188,905.76 = 479,561.28 : x
  2. Step 2: Convert to fraction form
    861,534.96/1,188,905.76 = 479,561.28/x
  3. Step 3: Cross multiply
    861,534.96x = 1,188,905.76 × 479,561.28
  4. Step 4: Simplify right side
    861,534.96x = 570,153,168,064.97
  5. Step 5: Solve for x
    x = 570,153,168,064.97/861,534.96
  6. Step 6: Final answer
    x = 661,787.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.