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Finding the Fourth Proportional to 638,380.80, 957,344.40 and 282,758.40

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Solution

The fourth proportional to 638,380.80, 957,344.40 and 282,758.40 is: 424,037.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,380.80 : 957,344.40 = 282,758.40 : x
  2. Step 2: Convert to fraction form
    638,380.80/957,344.40 = 282,758.40/x
  3. Step 3: Cross multiply
    638,380.80x = 957,344.40 × 282,758.40
  4. Step 4: Simplify right side
    638,380.80x = 270,697,170,792.96
  5. Step 5: Solve for x
    x = 270,697,170,792.96/638,380.80
  6. Step 6: Final answer
    x = 424,037.14

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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.