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Finding the Fourth Proportional to 641,607.68, 885,319.47 and 369,622.37

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Solution

The fourth proportional to 641,607.68, 885,319.47 and 369,622.37 is: 510,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,607.68 : 885,319.47 = 369,622.37 : x
  2. Step 2: Convert to fraction form
    641,607.68/885,319.47 = 369,622.37/x
  3. Step 3: Cross multiply
    641,607.68x = 885,319.47 × 369,622.37
  4. Step 4: Simplify right side
    641,607.68x = 327,233,882,921.84
  5. Step 5: Solve for x
    x = 327,233,882,921.84/641,607.68
  6. Step 6: Final answer
    x = 510,021.77

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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.