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Finding the Fourth Proportional to 454,990.20, 683,046.90 and 286,510.20

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Solution

The fourth proportional to 454,990.20, 683,046.90 and 286,510.20 is: 430,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,990.20 : 683,046.90 = 286,510.20 : x
  2. Step 2: Convert to fraction form
    454,990.20/683,046.90 = 286,510.20/x
  3. Step 3: Cross multiply
    454,990.20x = 683,046.90 × 286,510.20
  4. Step 4: Simplify right side
    454,990.20x = 195,699,903,928.38
  5. Step 5: Solve for x
    x = 195,699,903,928.38/454,990.20
  6. Step 6: Final answer
    x = 430,118.94

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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.