Home / 805,692.72-1,111,863.36-438,173.28

Finding the Fourth Proportional to 805,692.72, 1,111,863.36 and 438,173.28

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Solution

The fourth proportional to 805,692.72, 1,111,863.36 and 438,173.28 is: 604,683.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,692.72 : 1,111,863.36 = 438,173.28 : x
  2. Step 2: Convert to fraction form
    805,692.72/1,111,863.36 = 438,173.28/x
  3. Step 3: Cross multiply
    805,692.72x = 1,111,863.36 × 438,173.28
  4. Step 4: Simplify right side
    805,692.72x = 487,188,815,363.02
  5. Step 5: Solve for x
    x = 487,188,815,363.02/805,692.72
  6. Step 6: Final answer
    x = 604,683.15

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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.