Home / 527,517.47-727,931.03-309,703.21

Finding the Fourth Proportional to 527,517.47, 727,931.03 and 309,703.21

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Solution

The fourth proportional to 527,517.47, 727,931.03 and 309,703.21 is: 427,365.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,517.47 : 727,931.03 = 309,703.21 : x
  2. Step 2: Convert to fraction form
    527,517.47/727,931.03 = 309,703.21/x
  3. Step 3: Cross multiply
    527,517.47x = 727,931.03 × 309,703.21
  4. Step 4: Simplify right side
    527,517.47x = 225,442,576,649.61
  5. Step 5: Solve for x
    x = 225,442,576,649.61/527,517.47
  6. Step 6: Final answer
    x = 427,365.14

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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.