Home / 1,005,200.28-1,387,499.66-643,598.04

Finding the Fourth Proportional to 1,005,200.28, 1,387,499.66 and 643,598.04

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Solution

The fourth proportional to 1,005,200.28, 1,387,499.66 and 643,598.04 is: 888,372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,200.28 : 1,387,499.66 = 643,598.04 : x
  2. Step 2: Convert to fraction form
    1,005,200.28/1,387,499.66 = 643,598.04/x
  3. Step 3: Cross multiply
    1,005,200.28x = 1,387,499.66 × 643,598.04
  4. Step 4: Simplify right side
    1,005,200.28x = 892,992,061,676.67
  5. Step 5: Solve for x
    x = 892,992,061,676.67/1,005,200.28
  6. Step 6: Final answer
    x = 888,372.28

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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.