Home / 842,118.40-1,161,994.56-479,557.12

Finding the Fourth Proportional to 842,118.40, 1,161,994.56 and 479,557.12

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Solution

The fourth proportional to 842,118.40, 1,161,994.56 and 479,557.12 is: 661,715.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,118.40 : 1,161,994.56 = 479,557.12 : x
  2. Step 2: Convert to fraction form
    842,118.40/1,161,994.56 = 479,557.12/x
  3. Step 3: Cross multiply
    842,118.40x = 1,161,994.56 × 479,557.12
  4. Step 4: Simplify right side
    842,118.40x = 557,242,764,649.27
  5. Step 5: Solve for x
    x = 557,242,764,649.27/842,118.40
  6. Step 6: Final answer
    x = 661,715.46

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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.