Home / 528,091.70-792,137.55-318,139.70

Finding the Fourth Proportional to 528,091.70, 792,137.55 and 318,139.70

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Solution

The fourth proportional to 528,091.70, 792,137.55 and 318,139.70 is: 477,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,091.70 : 792,137.55 = 318,139.70 : x
  2. Step 2: Convert to fraction form
    528,091.70/792,137.55 = 318,139.70/x
  3. Step 3: Cross multiply
    528,091.70x = 792,137.55 × 318,139.70
  4. Step 4: Simplify right side
    528,091.70x = 252,010,402,515.74
  5. Step 5: Solve for x
    x = 252,010,402,515.74/528,091.70
  6. Step 6: Final answer
    x = 477,209.55

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Similar ratio
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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.