Home / 528,077.20-792,115.80-318,125.20

Finding the Fourth Proportional to 528,077.20, 792,115.80 and 318,125.20

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Solution

The fourth proportional to 528,077.20, 792,115.80 and 318,125.20 is: 477,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,077.20 : 792,115.80 = 318,125.20 : x
  2. Step 2: Convert to fraction form
    528,077.20/792,115.80 = 318,125.20/x
  3. Step 3: Cross multiply
    528,077.20x = 792,115.80 × 318,125.20
  4. Step 4: Simplify right side
    528,077.20x = 251,991,997,298.16
  5. Step 5: Solve for x
    x = 251,991,997,298.16/528,077.20
  6. Step 6: Final answer
    x = 477,187.80

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Similar ratio
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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.