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Finding the Fourth Proportional to 527,079.65, 727,370.21 and 285,362.28

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Solution

The fourth proportional to 527,079.65, 727,370.21 and 285,362.28 is: 393,800.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,079.65 : 727,370.21 = 285,362.28 : x
  2. Step 2: Convert to fraction form
    527,079.65/727,370.21 = 285,362.28/x
  3. Step 3: Cross multiply
    527,079.65x = 727,370.21 × 285,362.28
  4. Step 4: Simplify right side
    527,079.65x = 207,564,022,243.09
  5. Step 5: Solve for x
    x = 207,564,022,243.09/527,079.65
  6. Step 6: Final answer
    x = 393,800.11

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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.