Home / 642,705.03-963,388.89-215,924.13

Finding the Fourth Proportional to 642,705.03, 963,388.89 and 215,924.13

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Solution

The fourth proportional to 642,705.03, 963,388.89 and 215,924.13 is: 323,661.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,705.03 : 963,388.89 = 215,924.13 : x
  2. Step 2: Convert to fraction form
    642,705.03/963,388.89 = 215,924.13/x
  3. Step 3: Cross multiply
    642,705.03x = 963,388.89 × 215,924.13
  4. Step 4: Simplify right side
    642,705.03x = 208,018,907,924.92
  5. Step 5: Solve for x
    x = 208,018,907,924.92/642,705.03
  6. Step 6: Final answer
    x = 323,661.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.