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Finding the Fourth Proportional to 644,103.81, 888,846.35 and 357,616.53

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Solution

The fourth proportional to 644,103.81, 888,846.35 and 357,616.53 is: 493,501.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,103.81 : 888,846.35 = 357,616.53 : x
  2. Step 2: Convert to fraction form
    644,103.81/888,846.35 = 357,616.53/x
  3. Step 3: Cross multiply
    644,103.81x = 888,846.35 × 357,616.53
  4. Step 4: Simplify right side
    644,103.81x = 317,866,145,602.08
  5. Step 5: Solve for x
    x = 317,866,145,602.08/644,103.81
  6. Step 6: Final answer
    x = 493,501.42

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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.