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Finding the Fourth Proportional to 585,456.33, 807,919.21 and 330,802.05

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Solution

The fourth proportional to 585,456.33, 807,919.21 and 330,802.05 is: 456,500.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,456.33 : 807,919.21 = 330,802.05 : x
  2. Step 2: Convert to fraction form
    585,456.33/807,919.21 = 330,802.05/x
  3. Step 3: Cross multiply
    585,456.33x = 807,919.21 × 330,802.05
  4. Step 4: Simplify right side
    585,456.33x = 267,261,330,902.38
  5. Step 5: Solve for x
    x = 267,261,330,902.38/585,456.33
  6. Step 6: Final answer
    x = 456,500.88

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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.