Home / 805,712.72-1,111,890.96-438,193.28

Finding the Fourth Proportional to 805,712.72, 1,111,890.96 and 438,193.28

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Solution

The fourth proportional to 805,712.72, 1,111,890.96 and 438,193.28 is: 604,710.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,712.72 : 1,111,890.96 = 438,193.28 : x
  2. Step 2: Convert to fraction form
    805,712.72/1,111,890.96 = 438,193.28/x
  3. Step 3: Cross multiply
    805,712.72x = 1,111,890.96 × 438,193.28
  4. Step 4: Simplify right side
    805,712.72x = 487,223,146,764.75
  5. Step 5: Solve for x
    x = 487,223,146,764.75/805,712.72
  6. Step 6: Final answer
    x = 604,710.75

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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.