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Finding the Fourth Proportional to 633,085.52, 873,669 and 391,362.08

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Solution

The fourth proportional to 633,085.52, 873,669 and 391,362.08 is: 540,086.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,085.52 : 873,669 = 391,362.08 : x
  2. Step 2: Convert to fraction form
    633,085.52/873,669 = 391,362.08/x
  3. Step 3: Cross multiply
    633,085.52x = 873,669 × 391,362.08
  4. Step 4: Simplify right side
    633,085.52x = 341,920,917,071.52
  5. Step 5: Solve for x
    x = 341,920,917,071.52/633,085.52
  6. Step 6: Final answer
    x = 540,086.46

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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.