Home / 411,212,641.60-616,821,061.92-138,585,770.56

Finding the Fourth Proportional to 411,212,641.60, 616,821,061.92 and 138,585,770.56

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Solution

The fourth proportional to 411,212,641.60, 616,821,061.92 and 138,585,770.56 is: 207,879,363.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,212,641.60 : 616,821,061.92 = 138,585,770.56 : x
  2. Step 2: Convert to fraction form
    411,212,641.60/616,821,061.92 = 138,585,770.56/x
  3. Step 3: Cross multiply
    411,212,641.60x = 616,821,061.92 × 138,585,770.56
  4. Step 4: Simplify right side
    411,212,641.60x = 85,482,622,163,820,672
  5. Step 5: Solve for x
    x = 85,482,622,163,820,672/411,212,641.60
  6. Step 6: Final answer
    x = 207,879,363.41

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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.