Home / 728,742.02-1,005,143.38-631,772.53

Finding the Fourth Proportional to 728,742.02, 1,005,143.38 and 631,772.53

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Solution

The fourth proportional to 728,742.02, 1,005,143.38 and 631,772.53 is: 871,394.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,742.02 : 1,005,143.38 = 631,772.53 : x
  2. Step 2: Convert to fraction form
    728,742.02/1,005,143.38 = 631,772.53/x
  3. Step 3: Cross multiply
    728,742.02x = 1,005,143.38 × 631,772.53
  4. Step 4: Simplify right side
    728,742.02x = 635,021,972,103.06
  5. Step 5: Solve for x
    x = 635,021,972,103.06/728,742.02
  6. Step 6: Final answer
    x = 871,394.76

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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.