Home / 778,350.30-1,074,121.63-438,816.12

Finding the Fourth Proportional to 778,350.30, 1,074,121.63 and 438,816.12

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Solution

The fourth proportional to 778,350.30, 1,074,121.63 and 438,816.12 is: 605,565.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,350.30 : 1,074,121.63 = 438,816.12 : x
  2. Step 2: Convert to fraction form
    778,350.30/1,074,121.63 = 438,816.12/x
  3. Step 3: Cross multiply
    778,350.30x = 1,074,121.63 × 438,816.12
  4. Step 4: Simplify right side
    778,350.30x = 471,341,886,084.68
  5. Step 5: Solve for x
    x = 471,341,886,084.68/778,350.30
  6. Step 6: Final answer
    x = 605,565.24

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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.