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Finding the Fourth Proportional to 942,950.40, 1,412,870.40 and 809,203.20

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Solution

The fourth proportional to 942,950.40, 1,412,870.40 and 809,203.20 is: 1,212,470.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,950.40 : 1,412,870.40 = 809,203.20 : x
  2. Step 2: Convert to fraction form
    942,950.40/1,412,870.40 = 809,203.20/x
  3. Step 3: Cross multiply
    942,950.40x = 1,412,870.40 × 809,203.20
  4. Step 4: Simplify right side
    942,950.40x = 1,143,299,248,865.28
  5. Step 5: Solve for x
    x = 1,143,299,248,865.28/942,950.40
  6. Step 6: Final answer
    x = 1,212,470.19

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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.