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Finding the Fourth Proportional to 640,936.60, 884,456.48 and 350,490.51

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Solution

The fourth proportional to 640,936.60, 884,456.48 and 350,490.51 is: 483,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,936.60 : 884,456.48 = 350,490.51 : x
  2. Step 2: Convert to fraction form
    640,936.60/884,456.48 = 350,490.51/x
  3. Step 3: Cross multiply
    640,936.60x = 884,456.48 × 350,490.51
  4. Step 4: Simplify right side
    640,936.60x = 309,993,603,624.23
  5. Step 5: Solve for x
    x = 309,993,603,624.23/640,936.60
  6. Step 6: Final answer
    x = 483,657.21

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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.