Home / 407,876,135.40-611,814,203.10-343,306,053.90

Finding the Fourth Proportional to 407,876,135.40, 611,814,203.10 and 343,306,053.90

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Solution

The fourth proportional to 407,876,135.40, 611,814,203.10 and 343,306,053.90 is: 514,959,080.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,876,135.40 : 611,814,203.10 = 343,306,053.90 : x
  2. Step 2: Convert to fraction form
    407,876,135.40/611,814,203.10 = 343,306,053.90/x
  3. Step 3: Cross multiply
    407,876,135.40x = 611,814,203.10 × 343,306,053.90
  4. Step 4: Simplify right side
    407,876,135.40x = 210,039,519,786,234,144
  5. Step 5: Solve for x
    x = 210,039,519,786,234,144/407,876,135.40
  6. Step 6: Final answer
    x = 514,959,080.85

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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.