Home / 876,987.60-1,315,999.80-578,331.60

Finding the Fourth Proportional to 876,987.60, 1,315,999.80 and 578,331.60

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Solution

The fourth proportional to 876,987.60, 1,315,999.80 and 578,331.60 is: 867,839.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,987.60 : 1,315,999.80 = 578,331.60 : x
  2. Step 2: Convert to fraction form
    876,987.60/1,315,999.80 = 578,331.60/x
  3. Step 3: Cross multiply
    876,987.60x = 1,315,999.80 × 578,331.60
  4. Step 4: Simplify right side
    876,987.60x = 761,084,269,933.68
  5. Step 5: Solve for x
    x = 761,084,269,933.68/876,987.60
  6. Step 6: Final answer
    x = 867,839.26

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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.