Home / 778,981.80-1,168,472.70-305,682.60

Finding the Fourth Proportional to 778,981.80, 1,168,472.70 and 305,682.60

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Solution

The fourth proportional to 778,981.80, 1,168,472.70 and 305,682.60 is: 458,523.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,981.80 : 1,168,472.70 = 305,682.60 : x
  2. Step 2: Convert to fraction form
    778,981.80/1,168,472.70 = 305,682.60/x
  3. Step 3: Cross multiply
    778,981.80x = 1,168,472.70 × 305,682.60
  4. Step 4: Simplify right side
    778,981.80x = 357,181,772,965.02
  5. Step 5: Solve for x
    x = 357,181,772,965.02/778,981.80
  6. Step 6: Final answer
    x = 458,523.90

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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.