Home / 811,722,813,101.85-1,120,178,216,261.50-445,940,711,829.39

Finding the Fourth Proportional to 811,722,813,101.85, 1,120,178,216,261.50 and 445,940,711,829.39

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Solution

The fourth proportional to 811,722,813,101.85, 1,120,178,216,261.50 and 445,940,711,829.39 is: 615,398,585,665.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,722,813,101.85 : 1,120,178,216,261.50 = 445,940,711,829.39 : x
  2. Step 2: Convert to fraction form
    811,722,813,101.85/1,120,178,216,261.50 = 445,940,711,829.39/x
  3. Step 3: Cross multiply
    811,722,813,101.85x = 1,120,178,216,261.50 × 445,940,711,829.39
  4. Step 4: Simplify right side
    811,722,813,101.85x = 499,533,071,135,429,711,888,384
  5. Step 5: Solve for x
    x = 499,533,071,135,429,711,888,384/811,722,813,101.85
  6. Step 6: Final answer
    x = 615,398,585,665.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.