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Finding the Fourth Proportional to 409,626.80, 614,440.20 and 339,585.20

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Solution

The fourth proportional to 409,626.80, 614,440.20 and 339,585.20 is: 509,377.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,626.80 : 614,440.20 = 339,585.20 : x
  2. Step 2: Convert to fraction form
    409,626.80/614,440.20 = 339,585.20/x
  3. Step 3: Cross multiply
    409,626.80x = 614,440.20 × 339,585.20
  4. Step 4: Simplify right side
    409,626.80x = 208,654,798,205.04
  5. Step 5: Solve for x
    x = 208,654,798,205.04/409,626.80
  6. Step 6: Final answer
    x = 509,377.80

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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.