Home / 1,111,078.80-1,666,229.40-578,422.80

Finding the Fourth Proportional to 1,111,078.80, 1,666,229.40 and 578,422.80

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Solution

The fourth proportional to 1,111,078.80, 1,666,229.40 and 578,422.80 is: 867,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,078.80 : 1,666,229.40 = 578,422.80 : x
  2. Step 2: Convert to fraction form
    1,111,078.80/1,666,229.40 = 578,422.80/x
  3. Step 3: Cross multiply
    1,111,078.80x = 1,666,229.40 × 578,422.80
  4. Step 4: Simplify right side
    1,111,078.80x = 963,785,074,990.32
  5. Step 5: Solve for x
    x = 963,785,074,990.32/1,111,078.80
  6. Step 6: Final answer
    x = 867,431.79

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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.