Home / 979,895.20-1,469,842.80-315,114.40

Finding the Fourth Proportional to 979,895.20, 1,469,842.80 and 315,114.40

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Solution

The fourth proportional to 979,895.20, 1,469,842.80 and 315,114.40 is: 472,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,895.20 : 1,469,842.80 = 315,114.40 : x
  2. Step 2: Convert to fraction form
    979,895.20/1,469,842.80 = 315,114.40/x
  3. Step 3: Cross multiply
    979,895.20x = 1,469,842.80 × 315,114.40
  4. Step 4: Simplify right side
    979,895.20x = 463,168,632,016.32
  5. Step 5: Solve for x
    x = 463,168,632,016.32/979,895.20
  6. Step 6: Final answer
    x = 472,671.60

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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.