Home / 781,861.69-1,078,961.84-442,329.94

Finding the Fourth Proportional to 781,861.69, 1,078,961.84 and 442,329.94

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Solution

The fourth proportional to 781,861.69, 1,078,961.84 and 442,329.94 is: 610,411.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,861.69 : 1,078,961.84 = 442,329.94 : x
  2. Step 2: Convert to fraction form
    781,861.69/1,078,961.84 = 442,329.94/x
  3. Step 3: Cross multiply
    781,861.69x = 1,078,961.84 × 442,329.94
  4. Step 4: Simplify right side
    781,861.69x = 477,257,125,949.49
  5. Step 5: Solve for x
    x = 477,257,125,949.49/781,861.69
  6. Step 6: Final answer
    x = 610,411.19

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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.