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Finding the Fourth Proportional to 650,548.18, 976,938.99 and 399,304

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Solution

The fourth proportional to 650,548.18, 976,938.99 and 399,304 is: 599,641.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,548.18 : 976,938.99 = 399,304 : x
  2. Step 2: Convert to fraction form
    650,548.18/976,938.99 = 399,304/x
  3. Step 3: Cross multiply
    650,548.18x = 976,938.99 × 399,304
  4. Step 4: Simplify right side
    650,548.18x = 390,095,646,462.96
  5. Step 5: Solve for x
    x = 390,095,646,462.96/650,548.18
  6. Step 6: Final answer
    x = 599,641.44

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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.