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Finding the Fourth Proportional to 411,055.40, 615,999.90 and 303,600.80

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Solution

The fourth proportional to 411,055.40, 615,999.90 and 303,600.80 is: 454,970.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,055.40 : 615,999.90 = 303,600.80 : x
  2. Step 2: Convert to fraction form
    411,055.40/615,999.90 = 303,600.80/x
  3. Step 3: Cross multiply
    411,055.40x = 615,999.90 × 303,600.80
  4. Step 4: Simplify right side
    411,055.40x = 187,018,062,439.92
  5. Step 5: Solve for x
    x = 187,018,062,439.92/411,055.40
  6. Step 6: Final answer
    x = 454,970.46

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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.