Home / 912,643.20-1,369,159.20-281,620.80

Finding the Fourth Proportional to 912,643.20, 1,369,159.20 and 281,620.80

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Solution

The fourth proportional to 912,643.20, 1,369,159.20 and 281,620.80 is: 422,491.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,643.20 : 1,369,159.20 = 281,620.80 : x
  2. Step 2: Convert to fraction form
    912,643.20/1,369,159.20 = 281,620.80/x
  3. Step 3: Cross multiply
    912,643.20x = 1,369,159.20 × 281,620.80
  4. Step 4: Simplify right side
    912,643.20x = 385,583,709,231.36
  5. Step 5: Solve for x
    x = 385,583,709,231.36/912,643.20
  6. Step 6: Final answer
    x = 422,491.19

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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.