Home / 729,342.53-1,005,288.01-487,536.87

Finding the Fourth Proportional to 729,342.53, 1,005,288.01 and 487,536.87

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Solution

The fourth proportional to 729,342.53, 1,005,288.01 and 487,536.87 is: 671,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,342.53 : 1,005,288.01 = 487,536.87 : x
  2. Step 2: Convert to fraction form
    729,342.53/1,005,288.01 = 487,536.87/x
  3. Step 3: Cross multiply
    729,342.53x = 1,005,288.01 × 487,536.87
  4. Step 4: Simplify right side
    729,342.53x = 490,114,969,843.93
  5. Step 5: Solve for x
    x = 490,114,969,843.93/729,342.53
  6. Step 6: Final answer
    x = 671,995.60

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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.