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Finding the Fourth Proportional to 527,797.63, 728,343.03 and 312,810.07

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Solution

The fourth proportional to 527,797.63, 728,343.03 and 312,810.07 is: 431,667.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,797.63 : 728,343.03 = 312,810.07 : x
  2. Step 2: Convert to fraction form
    527,797.63/728,343.03 = 312,810.07/x
  3. Step 3: Cross multiply
    527,797.63x = 728,343.03 × 312,810.07
  4. Step 4: Simplify right side
    527,797.63x = 227,833,034,198.31
  5. Step 5: Solve for x
    x = 227,833,034,198.31/527,797.63
  6. Step 6: Final answer
    x = 431,667.41

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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.