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Finding the Fourth Proportional to 890,672.16, 1,335,996.87 and 216,754.62

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Solution

The fourth proportional to 890,672.16, 1,335,996.87 and 216,754.62 is: 325,129.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,672.16 : 1,335,996.87 = 216,754.62 : x
  2. Step 2: Convert to fraction form
    890,672.16/1,335,996.87 = 216,754.62/x
  3. Step 3: Cross multiply
    890,672.16x = 1,335,996.87 × 216,754.62
  4. Step 4: Simplify right side
    890,672.16x = 289,583,493,878.04
  5. Step 5: Solve for x
    x = 289,583,493,878.04/890,672.16
  6. Step 6: Final answer
    x = 325,129.16

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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.