Home / 912,772.40-1,369,288.20-281,620.40

Finding the Fourth Proportional to 912,772.40, 1,369,288.20 and 281,620.40

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Solution

The fourth proportional to 912,772.40, 1,369,288.20 and 281,620.40 is: 422,470.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,772.40 : 1,369,288.20 = 281,620.40 : x
  2. Step 2: Convert to fraction form
    912,772.40/1,369,288.20 = 281,620.40/x
  3. Step 3: Cross multiply
    912,772.40x = 1,369,288.20 × 281,620.40
  4. Step 4: Simplify right side
    912,772.40x = 385,619,490,599.28
  5. Step 5: Solve for x
    x = 385,619,490,599.28/912,772.40
  6. Step 6: Final answer
    x = 422,470.59

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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.