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Finding the Fourth Proportional to 585,271.60, 807,740.36 and 330,639.20

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Solution

The fourth proportional to 585,271.60, 807,740.36 and 330,639.20 is: 456,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,271.60 : 807,740.36 = 330,639.20 : x
  2. Step 2: Convert to fraction form
    585,271.60/807,740.36 = 330,639.20/x
  3. Step 3: Cross multiply
    585,271.60x = 807,740.36 × 330,639.20
  4. Step 4: Simplify right side
    585,271.60x = 267,070,626,438.11
  5. Step 5: Solve for x
    x = 267,070,626,438.11/585,271.60
  6. Step 6: Final answer
    x = 456,319.13

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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.