Home / 881,428.32-1,216,371.60-479,020.32

Finding the Fourth Proportional to 881,428.32, 1,216,371.60 and 479,020.32

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Solution

The fourth proportional to 881,428.32, 1,216,371.60 and 479,020.32 is: 661,048.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,428.32 : 1,216,371.60 = 479,020.32 : x
  2. Step 2: Convert to fraction form
    881,428.32/1,216,371.60 = 479,020.32/x
  3. Step 3: Cross multiply
    881,428.32x = 1,216,371.60 × 479,020.32
  4. Step 4: Simplify right side
    881,428.32x = 582,666,713,070.91
  5. Step 5: Solve for x
    x = 582,666,713,070.91/881,428.32
  6. Step 6: Final answer
    x = 661,048.32

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.