Home / 781,865.38-1,078,966.93-442,333.63

Finding the Fourth Proportional to 781,865.38, 1,078,966.93 and 442,333.63

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Solution

The fourth proportional to 781,865.38, 1,078,966.93 and 442,333.63 is: 610,416.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,865.38 : 1,078,966.93 = 442,333.63 : x
  2. Step 2: Convert to fraction form
    781,865.38/1,078,966.93 = 442,333.63/x
  3. Step 3: Cross multiply
    781,865.38x = 1,078,966.93 × 442,333.63
  4. Step 4: Simplify right side
    781,865.38x = 477,263,351,190.35
  5. Step 5: Solve for x
    x = 477,263,351,190.35/781,865.38
  6. Step 6: Final answer
    x = 610,416.28

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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.