Home / 877,078.80-1,315,618.20-212,230.80

Finding the Fourth Proportional to 877,078.80, 1,315,618.20 and 212,230.80

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Solution

The fourth proportional to 877,078.80, 1,315,618.20 and 212,230.80 is: 318,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,078.80 : 1,315,618.20 = 212,230.80 : x
  2. Step 2: Convert to fraction form
    877,078.80/1,315,618.20 = 212,230.80/x
  3. Step 3: Cross multiply
    877,078.80x = 1,315,618.20 × 212,230.80
  4. Step 4: Simplify right side
    877,078.80x = 279,214,703,080.56
  5. Step 5: Solve for x
    x = 279,214,703,080.56/877,078.80
  6. Step 6: Final answer
    x = 318,346.20

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Double scale
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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.