Home / 781,858.53-1,078,957.48-442,326.78

Finding the Fourth Proportional to 781,858.53, 1,078,957.48 and 442,326.78

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Solution

The fourth proportional to 781,858.53, 1,078,957.48 and 442,326.78 is: 610,406.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,858.53 : 1,078,957.48 = 442,326.78 : x
  2. Step 2: Convert to fraction form
    781,858.53/1,078,957.48 = 442,326.78/x
  3. Step 3: Cross multiply
    781,858.53x = 1,078,957.48 × 442,326.78
  4. Step 4: Simplify right side
    781,858.53x = 477,251,787,885.31
  5. Step 5: Solve for x
    x = 477,251,787,885.31/781,858.53
  6. Step 6: Final answer
    x = 610,406.83

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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.