Home / 821,440.10-1,232,160.15-448,192.10

Finding the Fourth Proportional to 821,440.10, 1,232,160.15 and 448,192.10

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Solution

The fourth proportional to 821,440.10, 1,232,160.15 and 448,192.10 is: 672,288.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,440.10 : 1,232,160.15 = 448,192.10 : x
  2. Step 2: Convert to fraction form
    821,440.10/1,232,160.15 = 448,192.10/x
  3. Step 3: Cross multiply
    821,440.10x = 1,232,160.15 × 448,192.10
  4. Step 4: Simplify right side
    821,440.10x = 552,244,445,164.82
  5. Step 5: Solve for x
    x = 552,244,445,164.82/821,440.10
  6. Step 6: Final answer
    x = 672,288.15

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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.