Home / 817,777.20-1,226,665.80-687,140.40

Finding the Fourth Proportional to 817,777.20, 1,226,665.80 and 687,140.40

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Solution

The fourth proportional to 817,777.20, 1,226,665.80 and 687,140.40 is: 1,030,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,777.20 : 1,226,665.80 = 687,140.40 : x
  2. Step 2: Convert to fraction form
    817,777.20/1,226,665.80 = 687,140.40/x
  3. Step 3: Cross multiply
    817,777.20x = 1,226,665.80 × 687,140.40
  4. Step 4: Simplify right side
    817,777.20x = 842,891,628,478.32
  5. Step 5: Solve for x
    x = 842,891,628,478.32/817,777.20
  6. Step 6: Final answer
    x = 1,030,710.60

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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.