Home / 1,221,007.50-1,684,990.35-677,226.56

Finding the Fourth Proportional to 1,221,007.50, 1,684,990.35 and 677,226.56

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Solution

The fourth proportional to 1,221,007.50, 1,684,990.35 and 677,226.56 is: 934,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,007.50 : 1,684,990.35 = 677,226.56 : x
  2. Step 2: Convert to fraction form
    1,221,007.50/1,684,990.35 = 677,226.56/x
  3. Step 3: Cross multiply
    1,221,007.50x = 1,684,990.35 × 677,226.56
  4. Step 4: Simplify right side
    1,221,007.50x = 1,141,120,209,938.74
  5. Step 5: Solve for x
    x = 1,141,120,209,938.74/1,221,007.50
  6. Step 6: Final answer
    x = 934,572.65

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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.