Home / 760,729.28-1,049,839.20-421,197.50

Finding the Fourth Proportional to 760,729.28, 1,049,839.20 and 421,197.50

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Solution

The fourth proportional to 760,729.28, 1,049,839.20 and 421,197.50 is: 581,270.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,729.28 : 1,049,839.20 = 421,197.50 : x
  2. Step 2: Convert to fraction form
    760,729.28/1,049,839.20 = 421,197.50/x
  3. Step 3: Cross multiply
    760,729.28x = 1,049,839.20 × 421,197.50
  4. Step 4: Simplify right side
    760,729.28x = 442,189,646,442
  5. Step 5: Solve for x
    x = 442,189,646,442/760,729.28
  6. Step 6: Final answer
    x = 581,270.71

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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.