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Finding the Fourth Proportional to 878,264.88, 1,211,538 and 534,206

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Solution

The fourth proportional to 878,264.88, 1,211,538 and 534,206 is: 736,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,264.88 : 1,211,538 = 534,206 : x
  2. Step 2: Convert to fraction form
    878,264.88/1,211,538 = 534,206/x
  3. Step 3: Cross multiply
    878,264.88x = 1,211,538 × 534,206
  4. Step 4: Simplify right side
    878,264.88x = 647,210,868,828
  5. Step 5: Solve for x
    x = 647,210,868,828/878,264.88
  6. Step 6: Final answer
    x = 736,919.90

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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.