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Finding the Fourth Proportional to 641,858.34, 885,778.32 and 351,482.16

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Solution

The fourth proportional to 641,858.34, 885,778.32 and 351,482.16 is: 485,052.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,858.34 : 885,778.32 = 351,482.16 : x
  2. Step 2: Convert to fraction form
    641,858.34/885,778.32 = 351,482.16/x
  3. Step 3: Cross multiply
    641,858.34x = 885,778.32 × 351,482.16
  4. Step 4: Simplify right side
    641,858.34x = 311,335,277,194.77
  5. Step 5: Solve for x
    x = 311,335,277,194.77/641,858.34
  6. Step 6: Final answer
    x = 485,052.94

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1.5x scale

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.