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Finding the Fourth Proportional to 409,681.60, 613,485.60 and 326,737.60

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Solution

The fourth proportional to 409,681.60, 613,485.60 and 326,737.60 is: 489,279.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,681.60 : 613,485.60 = 326,737.60 : x
  2. Step 2: Convert to fraction form
    409,681.60/613,485.60 = 326,737.60/x
  3. Step 3: Cross multiply
    409,681.60x = 613,485.60 × 326,737.60
  4. Step 4: Simplify right side
    409,681.60x = 200,448,812,578.56
  5. Step 5: Solve for x
    x = 200,448,812,578.56/409,681.60
  6. Step 6: Final answer
    x = 489,279.51

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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.