Home / 515,120,764.20-772,718,471.10-310,207,612.20

Finding the Fourth Proportional to 515,120,764.20, 772,718,471.10 and 310,207,612.20

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Solution

The fourth proportional to 515,120,764.20, 772,718,471.10 and 310,207,612.20 is: 465,333,895.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,120,764.20 : 772,718,471.10 = 310,207,612.20 : x
  2. Step 2: Convert to fraction form
    515,120,764.20/772,718,471.10 = 310,207,612.20/x
  3. Step 3: Cross multiply
    515,120,764.20x = 772,718,471.10 × 310,207,612.20
  4. Step 4: Simplify right side
    515,120,764.20x = 239,703,151,822,765,696
  5. Step 5: Solve for x
    x = 239,703,151,822,765,696/515,120,764.20
  6. Step 6: Final answer
    x = 465,333,895.43

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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.