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Finding the Fourth Proportional to 610,656, 842,705.64 and 372,192

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Solution

The fourth proportional to 610,656, 842,705.64 and 372,192 is: 513,625.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,656 : 842,705.64 = 372,192 : x
  2. Step 2: Convert to fraction form
    610,656/842,705.64 = 372,192/x
  3. Step 3: Cross multiply
    610,656x = 842,705.64 × 372,192
  4. Step 4: Simplify right side
    610,656x = 313,648,297,562.88
  5. Step 5: Solve for x
    x = 313,648,297,562.88/610,656
  6. Step 6: Final answer
    x = 513,625.18

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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.