Home / 745,084.32-1,028,187.78-422,775.20

Finding the Fourth Proportional to 745,084.32, 1,028,187.78 and 422,775.20

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Solution

The fourth proportional to 745,084.32, 1,028,187.78 and 422,775.20 is: 583,413.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,084.32 : 1,028,187.78 = 422,775.20 : x
  2. Step 2: Convert to fraction form
    745,084.32/1,028,187.78 = 422,775.20/x
  3. Step 3: Cross multiply
    745,084.32x = 1,028,187.78 × 422,775.20
  4. Step 4: Simplify right side
    745,084.32x = 434,692,289,186.12
  5. Step 5: Solve for x
    x = 434,692,289,186.12/745,084.32
  6. Step 6: Final answer
    x = 583,413.55

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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.