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Finding the Fourth Proportional to 527,015.51, 790,523.15 and 287,331

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Solution

The fourth proportional to 527,015.51, 790,523.15 and 287,331 is: 430,996.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,015.51 : 790,523.15 = 287,331 : x
  2. Step 2: Convert to fraction form
    527,015.51/790,523.15 = 287,331/x
  3. Step 3: Cross multiply
    527,015.51x = 790,523.15 × 287,331
  4. Step 4: Simplify right side
    527,015.51x = 227,141,807,212.65
  5. Step 5: Solve for x
    x = 227,141,807,212.65/527,015.51
  6. Step 6: Final answer
    x = 430,996.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.