Home / 912,829.20-1,369,438.20-281,806.80

Finding the Fourth Proportional to 912,829.20, 1,369,438.20 and 281,806.80

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Solution

The fourth proportional to 912,829.20, 1,369,438.20 and 281,806.80 is: 422,770.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,829.20 : 1,369,438.20 = 281,806.80 : x
  2. Step 2: Convert to fraction form
    912,829.20/1,369,438.20 = 281,806.80/x
  3. Step 3: Cross multiply
    912,829.20x = 1,369,438.20 × 281,806.80
  4. Step 4: Simplify right side
    912,829.20x = 385,916,996,939.76
  5. Step 5: Solve for x
    x = 385,916,996,939.76/912,829.20
  6. Step 6: Final answer
    x = 422,770.21

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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.