Home / 1,272,108,181.80-1,908,186,185.50-398,690,212.72

Finding the Fourth Proportional to 1,272,108,181.80, 1,908,186,185.50 and 398,690,212.72

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Solution

The fourth proportional to 1,272,108,181.80, 1,908,186,185.50 and 398,690,212.72 is: 598,042,813.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,108,181.80 : 1,908,186,185.50 = 398,690,212.72 : x
  2. Step 2: Convert to fraction form
    1,272,108,181.80/1,908,186,185.50 = 398,690,212.72/x
  3. Step 3: Cross multiply
    1,272,108,181.80x = 1,908,186,185.50 × 398,690,212.72
  4. Step 4: Simplify right side
    1,272,108,181.80x = 760,775,156,206,360,448
  5. Step 5: Solve for x
    x = 760,775,156,206,360,448/1,272,108,181.80
  6. Step 6: Final answer
    x = 598,042,813.57

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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.