Home / 527,142.36-727,431.53-312,247.74

Finding the Fourth Proportional to 527,142.36, 727,431.53 and 312,247.74

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Solution

The fourth proportional to 527,142.36, 727,431.53 and 312,247.74 is: 430,887.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,142.36 : 727,431.53 = 312,247.74 : x
  2. Step 2: Convert to fraction form
    527,142.36/727,431.53 = 312,247.74/x
  3. Step 3: Cross multiply
    527,142.36x = 727,431.53 × 312,247.74
  4. Step 4: Simplify right side
    527,142.36x = 227,138,849,686.00
  5. Step 5: Solve for x
    x = 227,138,849,686.00/527,142.36
  6. Step 6: Final answer
    x = 430,887.11

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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.