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Finding the Fourth Proportional to 642,362.22, 968,058.01 and 578,398.62

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Solution

The fourth proportional to 642,362.22, 968,058.01 and 578,398.62 is: 871,663.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,362.22 : 968,058.01 = 578,398.62 : x
  2. Step 2: Convert to fraction form
    642,362.22/968,058.01 = 578,398.62/x
  3. Step 3: Cross multiply
    642,362.22x = 968,058.01 × 578,398.62
  4. Step 4: Simplify right side
    642,362.22x = 559,923,419,790.42
  5. Step 5: Solve for x
    x = 559,923,419,790.42/642,362.22
  6. Step 6: Final answer
    x = 871,663.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.