Home / 818,022.42-1,227,328.92-285,621.90

Finding the Fourth Proportional to 818,022.42, 1,227,328.92 and 285,621.90

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Solution

The fourth proportional to 818,022.42, 1,227,328.92 and 285,621.90 is: 428,535.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,022.42 : 1,227,328.92 = 285,621.90 : x
  2. Step 2: Convert to fraction form
    818,022.42/1,227,328.92 = 285,621.90/x
  3. Step 3: Cross multiply
    818,022.42x = 1,227,328.92 × 285,621.90
  4. Step 4: Simplify right side
    818,022.42x = 350,552,018,055.35
  5. Step 5: Solve for x
    x = 350,552,018,055.35/818,022.42
  6. Step 6: Final answer
    x = 428,535.95

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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.