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Finding the Fourth Proportional to 478,558.32, 660,424.57 and 263,712.23

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Solution

The fourth proportional to 478,558.32, 660,424.57 and 263,712.23 is: 363,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,558.32 : 660,424.57 = 263,712.23 : x
  2. Step 2: Convert to fraction form
    478,558.32/660,424.57 = 263,712.23/x
  3. Step 3: Cross multiply
    478,558.32x = 660,424.57 × 263,712.23
  4. Step 4: Simplify right side
    478,558.32x = 174,162,036,101.49
  5. Step 5: Solve for x
    x = 174,162,036,101.49/478,558.32
  6. Step 6: Final answer
    x = 363,930.64

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Double scale
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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.