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Finding the Fourth Proportional to 528,013.60, 791,728.80 and 172,844.80

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Solution

The fourth proportional to 528,013.60, 791,728.80 and 172,844.80 is: 259,171.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,013.60 : 791,728.80 = 172,844.80 : x
  2. Step 2: Convert to fraction form
    528,013.60/791,728.80 = 172,844.80/x
  3. Step 3: Cross multiply
    528,013.60x = 791,728.80 × 172,844.80
  4. Step 4: Simplify right side
    528,013.60x = 136,846,206,090.24
  5. Step 5: Solve for x
    x = 136,846,206,090.24/528,013.60
  6. Step 6: Final answer
    x = 259,171.74

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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.