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Finding the Fourth Proportional to 781,203, 1,078,175.18 and 494,749.72

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Solution

The fourth proportional to 781,203, 1,078,175.18 and 494,749.72 is: 682,827.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,203 : 1,078,175.18 = 494,749.72 : x
  2. Step 2: Convert to fraction form
    781,203/1,078,175.18 = 494,749.72/x
  3. Step 3: Cross multiply
    781,203x = 1,078,175.18 × 494,749.72
  4. Step 4: Simplify right side
    781,203x = 533,426,868,415.95
  5. Step 5: Solve for x
    x = 533,426,868,415.95/781,203
  6. Step 6: Final answer
    x = 682,827.47

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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.