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Finding the Fourth Proportional to 666,731.32, 920,082.72 and 360,801.16

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Solution

The fourth proportional to 666,731.32, 920,082.72 and 360,801.16 is: 497,902.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,731.32 : 920,082.72 = 360,801.16 : x
  2. Step 2: Convert to fraction form
    666,731.32/920,082.72 = 360,801.16/x
  3. Step 3: Cross multiply
    666,731.32x = 920,082.72 × 360,801.16
  4. Step 4: Simplify right side
    666,731.32x = 331,966,912,671.96
  5. Step 5: Solve for x
    x = 331,966,912,671.96/666,731.32
  6. Step 6: Final answer
    x = 497,902.08

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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.