Home / 878,278.11-1,316,400.61-403,968.03

Finding the Fourth Proportional to 878,278.11, 1,316,400.61 and 403,968.03

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Solution

The fourth proportional to 878,278.11, 1,316,400.61 and 403,968.03 is: 605,484.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,278.11 : 1,316,400.61 = 403,968.03 : x
  2. Step 2: Convert to fraction form
    878,278.11/1,316,400.61 = 403,968.03/x
  3. Step 3: Cross multiply
    878,278.11x = 1,316,400.61 × 403,968.03
  4. Step 4: Simplify right side
    878,278.11x = 531,783,761,112.50
  5. Step 5: Solve for x
    x = 531,783,761,112.50/878,278.11
  6. Step 6: Final answer
    x = 605,484.48

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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.