Home / 1,243,362.20-1,866,425.70-770,581.40

Finding the Fourth Proportional to 1,243,362.20, 1,866,425.70 and 770,581.40

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Solution

The fourth proportional to 1,243,362.20, 1,866,425.70 and 770,581.40 is: 1,156,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,362.20 : 1,866,425.70 = 770,581.40 : x
  2. Step 2: Convert to fraction form
    1,243,362.20/1,866,425.70 = 770,581.40/x
  3. Step 3: Cross multiply
    1,243,362.20x = 1,866,425.70 × 770,581.40
  4. Step 4: Simplify right side
    1,243,362.20x = 1,438,232,928,901.98
  5. Step 5: Solve for x
    x = 1,438,232,928,901.98/1,243,362.20
  6. Step 6: Final answer
    x = 1,156,728.85

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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.