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Finding the Fourth Proportional to 636,743.66, 878,708.32 and 350,285.54

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Solution

The fourth proportional to 636,743.66, 878,708.32 and 350,285.54 is: 483,395.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,743.66 : 878,708.32 = 350,285.54 : x
  2. Step 2: Convert to fraction form
    636,743.66/878,708.32 = 350,285.54/x
  3. Step 3: Cross multiply
    636,743.66x = 878,708.32 × 350,285.54
  4. Step 4: Simplify right side
    636,743.66x = 307,798,813,104.44
  5. Step 5: Solve for x
    x = 307,798,813,104.44/636,743.66
  6. Step 6: Final answer
    x = 483,395.18

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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.