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Finding the Fourth Proportional to 585,257.81, 807,721.43 and 330,625.40

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Solution

The fourth proportional to 585,257.81, 807,721.43 and 330,625.40 is: 456,300.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,257.81 : 807,721.43 = 330,625.40 : x
  2. Step 2: Convert to fraction form
    585,257.81/807,721.43 = 330,625.40/x
  3. Step 3: Cross multiply
    585,257.81x = 807,721.43 × 330,625.40
  4. Step 4: Simplify right side
    585,257.81x = 267,053,221,248.50
  5. Step 5: Solve for x
    x = 267,053,221,248.50/585,257.81
  6. Step 6: Final answer
    x = 456,300.14

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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.