Home / 389,934,904.80-584,760,639.60-131,158,567.20

Finding the Fourth Proportional to 389,934,904.80, 584,760,639.60 and 131,158,567.20

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Solution

The fourth proportional to 389,934,904.80, 584,760,639.60 and 131,158,567.20 is: 196,690,182.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,934,904.80 : 584,760,639.60 = 131,158,567.20 : x
  2. Step 2: Convert to fraction form
    389,934,904.80/584,760,639.60 = 131,158,567.20/x
  3. Step 3: Cross multiply
    389,934,904.80x = 584,760,639.60 × 131,158,567.20
  4. Step 4: Simplify right side
    389,934,904.80x = 76,696,367,644,891,584
  5. Step 5: Solve for x
    x = 76,696,367,644,891,584/389,934,904.80
  6. Step 6: Final answer
    x = 196,690,182.65

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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.