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Finding the Fourth Proportional to 636,763.64, 878,699.22 and 350,237.48

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Solution

The fourth proportional to 636,763.64, 878,699.22 and 350,237.48 is: 483,308.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,763.64 : 878,699.22 = 350,237.48 : x
  2. Step 2: Convert to fraction form
    636,763.64/878,699.22 = 350,237.48/x
  3. Step 3: Cross multiply
    636,763.64x = 878,699.22 × 350,237.48
  4. Step 4: Simplify right side
    636,763.64x = 307,753,400,490.77
  5. Step 5: Solve for x
    x = 307,753,400,490.77/636,763.64
  6. Step 6: Final answer
    x = 483,308.69

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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.