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Finding the Fourth Proportional to 561,947.20, 842,920.80 and 558,010.60

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Solution

The fourth proportional to 561,947.20, 842,920.80 and 558,010.60 is: 837,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,947.20 : 842,920.80 = 558,010.60 : x
  2. Step 2: Convert to fraction form
    561,947.20/842,920.80 = 558,010.60/x
  3. Step 3: Cross multiply
    561,947.20x = 842,920.80 × 558,010.60
  4. Step 4: Simplify right side
    561,947.20x = 470,358,741,360.48
  5. Step 5: Solve for x
    x = 470,358,741,360.48/561,947.20
  6. Step 6: Final answer
    x = 837,015.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.