Home / 1,020,240,812.30-1,530,361,218.45-330,217,817.90

Finding the Fourth Proportional to 1,020,240,812.30, 1,530,361,218.45 and 330,217,817.90

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Solution

The fourth proportional to 1,020,240,812.30, 1,530,361,218.45 and 330,217,817.90 is: 495,326,726.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,240,812.30 : 1,530,361,218.45 = 330,217,817.90 : x
  2. Step 2: Convert to fraction form
    1,020,240,812.30/1,530,361,218.45 = 330,217,817.90/x
  3. Step 3: Cross multiply
    1,020,240,812.30x = 1,530,361,218.45 × 330,217,817.90
  4. Step 4: Simplify right side
    1,020,240,812.30x = 505,352,542,155,344,192
  5. Step 5: Solve for x
    x = 505,352,542,155,344,192/1,020,240,812.30
  6. Step 6: Final answer
    x = 495,326,726.85

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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.