Home / 781,355.88-1,078,076.58-454,722.60

Finding the Fourth Proportional to 781,355.88, 1,078,076.58 and 454,722.60

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Solution

The fourth proportional to 781,355.88, 1,078,076.58 and 454,722.60 is: 627,403.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,355.88 : 1,078,076.58 = 454,722.60 : x
  2. Step 2: Convert to fraction form
    781,355.88/1,078,076.58 = 454,722.60/x
  3. Step 3: Cross multiply
    781,355.88x = 1,078,076.58 × 454,722.60
  4. Step 4: Simplify right side
    781,355.88x = 490,225,785,456.71
  5. Step 5: Solve for x
    x = 490,225,785,456.71/781,355.88
  6. Step 6: Final answer
    x = 627,403.98

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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.