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Finding the Fourth Proportional to 585,270.60, 807,738.98 and 330,638.20

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Solution

The fourth proportional to 585,270.60, 807,738.98 and 330,638.20 is: 456,317.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,270.60 : 807,738.98 = 330,638.20 : x
  2. Step 2: Convert to fraction form
    585,270.60/807,738.98 = 330,638.20/x
  3. Step 3: Cross multiply
    585,270.60x = 807,738.98 × 330,638.20
  4. Step 4: Simplify right side
    585,270.60x = 267,069,362,417.04
  5. Step 5: Solve for x
    x = 267,069,362,417.04/585,270.60
  6. Step 6: Final answer
    x = 456,317.75

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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.