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Finding the Fourth Proportional to 644,158.40, 888,921.51 and 357,671.12

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Solution

The fourth proportional to 644,158.40, 888,921.51 and 357,671.12 is: 493,576.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,158.40 : 888,921.51 = 357,671.12 : x
  2. Step 2: Convert to fraction form
    644,158.40/888,921.51 = 357,671.12/x
  3. Step 3: Cross multiply
    644,158.40x = 888,921.51 × 357,671.12
  4. Step 4: Simplify right side
    644,158.40x = 317,941,552,073.79
  5. Step 5: Solve for x
    x = 317,941,552,073.79/644,158.40
  6. Step 6: Final answer
    x = 493,576.66

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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.