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Finding the Fourth Proportional to 636,723.18, 878,663.34 and 350,237.16

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Solution

The fourth proportional to 636,723.18, 878,663.34 and 350,237.16 is: 483,319.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,723.18 : 878,663.34 = 350,237.16 : x
  2. Step 2: Convert to fraction form
    636,723.18/878,663.34 = 350,237.16/x
  3. Step 3: Cross multiply
    636,723.18x = 878,663.34 × 350,237.16
  4. Step 4: Simplify right side
    636,723.18x = 307,740,552,797.71
  5. Step 5: Solve for x
    x = 307,740,552,797.71/636,723.18
  6. Step 6: Final answer
    x = 483,319.22

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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.