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Finding the Fourth Proportional to 641,930.32, 885,852.98 and 355,444.24

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Solution

The fourth proportional to 641,930.32, 885,852.98 and 355,444.24 is: 490,507.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,930.32 : 885,852.98 = 355,444.24 : x
  2. Step 2: Convert to fraction form
    641,930.32/885,852.98 = 355,444.24/x
  3. Step 3: Cross multiply
    641,930.32x = 885,852.98 × 355,444.24
  4. Step 4: Simplify right side
    641,930.32x = 314,871,339,227.84
  5. Step 5: Solve for x
    x = 314,871,339,227.84/641,930.32
  6. Step 6: Final answer
    x = 490,507.04

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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.