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Finding the Fourth Proportional to 942,956.40, 1,412,879.40 and 809,209.20

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Solution

The fourth proportional to 942,956.40, 1,412,879.40 and 809,209.20 is: 1,212,479.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,956.40 : 1,412,879.40 = 809,209.20 : x
  2. Step 2: Convert to fraction form
    942,956.40/1,412,879.40 = 809,209.20/x
  3. Step 3: Cross multiply
    942,956.40x = 1,412,879.40 × 809,209.20
  4. Step 4: Simplify right side
    942,956.40x = 1,143,315,008,970.48
  5. Step 5: Solve for x
    x = 1,143,315,008,970.48/942,956.40
  6. Step 6: Final answer
    x = 1,212,479.19

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1.5x scale

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.