Home / 781,557.46-1,078,549.30-423,861.46

Finding the Fourth Proportional to 781,557.46, 1,078,549.30 and 423,861.46

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Solution

The fourth proportional to 781,557.46, 1,078,549.30 and 423,861.46 is: 584,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,557.46 : 1,078,549.30 = 423,861.46 : x
  2. Step 2: Convert to fraction form
    781,557.46/1,078,549.30 = 423,861.46/x
  3. Step 3: Cross multiply
    781,557.46x = 1,078,549.30 × 423,861.46
  4. Step 4: Simplify right side
    781,557.46x = 457,155,480,979.98
  5. Step 5: Solve for x
    x = 457,155,480,979.98/781,557.46
  6. Step 6: Final answer
    x = 584,928.82

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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.