Home / 817,772.70-1,226,659.05-687,135.90

Finding the Fourth Proportional to 817,772.70, 1,226,659.05 and 687,135.90

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Solution

The fourth proportional to 817,772.70, 1,226,659.05 and 687,135.90 is: 1,030,703.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,772.70 : 1,226,659.05 = 687,135.90 : x
  2. Step 2: Convert to fraction form
    817,772.70/1,226,659.05 = 687,135.90/x
  3. Step 3: Cross multiply
    817,772.70x = 1,226,659.05 × 687,135.90
  4. Step 4: Simplify right side
    817,772.70x = 842,881,470,314.90
  5. Step 5: Solve for x
    x = 842,881,470,314.90/817,772.70
  6. Step 6: Final answer
    x = 1,030,703.85

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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.