Home / 781,855.60-1,078,953.43-442,323.85

Finding the Fourth Proportional to 781,855.60, 1,078,953.43 and 442,323.85

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Solution

The fourth proportional to 781,855.60, 1,078,953.43 and 442,323.85 is: 610,402.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,855.60 : 1,078,953.43 = 442,323.85 : x
  2. Step 2: Convert to fraction form
    781,855.60/1,078,953.43 = 442,323.85/x
  3. Step 3: Cross multiply
    781,855.60x = 1,078,953.43 × 442,323.85
  4. Step 4: Simplify right side
    781,855.60x = 477,246,831,325.11
  5. Step 5: Solve for x
    x = 477,246,831,325.11/781,855.60
  6. Step 6: Final answer
    x = 610,402.78

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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.