Home / 1,128,415.20-1,557,184.83-631,692.15

Finding the Fourth Proportional to 1,128,415.20, 1,557,184.83 and 631,692.15

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Solution

The fourth proportional to 1,128,415.20, 1,557,184.83 and 631,692.15 is: 871,719.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,415.20 : 1,557,184.83 = 631,692.15 : x
  2. Step 2: Convert to fraction form
    1,128,415.20/1,557,184.83 = 631,692.15/x
  3. Step 3: Cross multiply
    1,128,415.20x = 1,557,184.83 × 631,692.15
  4. Step 4: Simplify right side
    1,128,415.20x = 983,661,433,210.09
  5. Step 5: Solve for x
    x = 983,661,433,210.09/1,128,415.20
  6. Step 6: Final answer
    x = 871,719.41

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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.