Home / 778,346.80-1,074,116.82-438,812.62

Finding the Fourth Proportional to 778,346.80, 1,074,116.82 and 438,812.62

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Solution

The fourth proportional to 778,346.80, 1,074,116.82 and 438,812.62 is: 605,560.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,346.80 : 1,074,116.82 = 438,812.62 : x
  2. Step 2: Convert to fraction form
    778,346.80/1,074,116.82 = 438,812.62/x
  3. Step 3: Cross multiply
    778,346.80x = 1,074,116.82 × 438,812.62
  4. Step 4: Simplify right side
    778,346.80x = 471,336,015,970.27
  5. Step 5: Solve for x
    x = 471,336,015,970.27/778,346.80
  6. Step 6: Final answer
    x = 605,560.42

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.