Home / 390,541,766.80-585,812,679.36-304,344,690.16

Finding the Fourth Proportional to 390,541,766.80, 585,812,679.36 and 304,344,690.16

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Solution

The fourth proportional to 390,541,766.80, 585,812,679.36 and 304,344,690.16 is: 456,517,057.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,541,766.80 : 585,812,679.36 = 304,344,690.16 : x
  2. Step 2: Convert to fraction form
    390,541,766.80/585,812,679.36 = 304,344,690.16/x
  3. Step 3: Cross multiply
    390,541,766.80x = 585,812,679.36 × 304,344,690.16
  4. Step 4: Simplify right side
    390,541,766.80x = 178,288,978,391,618,656
  5. Step 5: Solve for x
    x = 178,288,978,391,618,656/390,541,766.80
  6. Step 6: Final answer
    x = 456,517,057.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.