Home / 781,824.60-1,078,361.76-717,501.57

Finding the Fourth Proportional to 781,824.60, 1,078,361.76 and 717,501.57

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Solution

The fourth proportional to 781,824.60, 1,078,361.76 and 717,501.57 is: 989,641.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,824.60 : 1,078,361.76 = 717,501.57 : x
  2. Step 2: Convert to fraction form
    781,824.60/1,078,361.76 = 717,501.57/x
  3. Step 3: Cross multiply
    781,824.60x = 1,078,361.76 × 717,501.57
  4. Step 4: Simplify right side
    781,824.60x = 773,726,255,827.96
  5. Step 5: Solve for x
    x = 773,726,255,827.96/781,824.60
  6. Step 6: Final answer
    x = 989,641.74

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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.