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Finding the Fourth Proportional to 1,255,076, 1,732,007.44 and 689,828

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Solution

The fourth proportional to 1,255,076, 1,732,007.44 and 689,828 is: 951,964.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,076 : 1,732,007.44 = 689,828 : x
  2. Step 2: Convert to fraction form
    1,255,076/1,732,007.44 = 689,828/x
  3. Step 3: Cross multiply
    1,255,076x = 1,732,007.44 × 689,828
  4. Step 4: Simplify right side
    1,255,076x = 1,194,787,228,320.32
  5. Step 5: Solve for x
    x = 1,194,787,228,320.32/1,255,076
  6. Step 6: Final answer
    x = 951,964.05

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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.