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Finding the Fourth Proportional to 1,142,712, 1,576,944 and 633,490.56

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Solution

The fourth proportional to 1,142,712, 1,576,944 and 633,490.56 is: 874,217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,712 : 1,576,944 = 633,490.56 : x
  2. Step 2: Convert to fraction form
    1,142,712/1,576,944 = 633,490.56/x
  3. Step 3: Cross multiply
    1,142,712x = 1,576,944 × 633,490.56
  4. Step 4: Simplify right side
    1,142,712x = 998,979,137,648.64
  5. Step 5: Solve for x
    x = 998,979,137,648.64/1,142,712
  6. Step 6: Final answer
    x = 874,217.77

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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.