Home / 667,689,328.80-1,001,067,433.20-394,919,690.40

Finding the Fourth Proportional to 667,689,328.80, 1,001,067,433.20 and 394,919,690.40

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Solution

The fourth proportional to 667,689,328.80, 1,001,067,433.20 and 394,919,690.40 is: 592,103,578.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,689,328.80 : 1,001,067,433.20 = 394,919,690.40 : x
  2. Step 2: Convert to fraction form
    667,689,328.80/1,001,067,433.20 = 394,919,690.40/x
  3. Step 3: Cross multiply
    667,689,328.80x = 1,001,067,433.20 × 394,919,690.40
  4. Step 4: Simplify right side
    667,689,328.80x = 395,341,240,788,866,688
  5. Step 5: Solve for x
    x = 395,341,240,788,866,688/667,689,328.80
  6. Step 6: Final answer
    x = 592,103,578.32

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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.