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Finding the Fourth Proportional to 561,948.40, 842,922.60 and 558,449.20

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Solution

The fourth proportional to 561,948.40, 842,922.60 and 558,449.20 is: 837,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,948.40 : 842,922.60 = 558,449.20 : x
  2. Step 2: Convert to fraction form
    561,948.40/842,922.60 = 558,449.20/x
  3. Step 3: Cross multiply
    561,948.40x = 842,922.60 × 558,449.20
  4. Step 4: Simplify right side
    561,948.40x = 470,729,451,631.92
  5. Step 5: Solve for x
    x = 470,729,451,631.92/561,948.40
  6. Step 6: Final answer
    x = 837,673.80

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Double scale
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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.