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Finding the Fourth Proportional to 640,443.11, 883,809.96 and 364,800.92

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Solution

The fourth proportional to 640,443.11, 883,809.96 and 364,800.92 is: 503,424.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,443.11 : 883,809.96 = 364,800.92 : x
  2. Step 2: Convert to fraction form
    640,443.11/883,809.96 = 364,800.92/x
  3. Step 3: Cross multiply
    640,443.11x = 883,809.96 × 364,800.92
  4. Step 4: Simplify right side
    640,443.11x = 322,414,680,270.11
  5. Step 5: Solve for x
    x = 322,414,680,270.11/640,443.11
  6. Step 6: Final answer
    x = 503,424.39

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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.