Home / 1,020,240,998.80-1,530,361,498.20-330,218,004.40

Finding the Fourth Proportional to 1,020,240,998.80, 1,530,361,498.20 and 330,218,004.40

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Solution

The fourth proportional to 1,020,240,998.80, 1,530,361,498.20 and 330,218,004.40 is: 495,327,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,240,998.80 : 1,530,361,498.20 = 330,218,004.40 : x
  2. Step 2: Convert to fraction form
    1,020,240,998.80/1,530,361,498.20 = 330,218,004.40/x
  3. Step 3: Cross multiply
    1,020,240,998.80x = 1,530,361,498.20 × 330,218,004.40
  4. Step 4: Simplify right side
    1,020,240,998.80x = 505,352,919,946,198,144
  5. Step 5: Solve for x
    x = 505,352,919,946,198,144/1,020,240,998.80
  6. Step 6: Final answer
    x = 495,327,006.60

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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.