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Finding the Fourth Proportional to 564,690.72, 779,274.72 and 310,058.40

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Solution

The fourth proportional to 564,690.72, 779,274.72 and 310,058.40 is: 427,881.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,690.72 : 779,274.72 = 310,058.40 : x
  2. Step 2: Convert to fraction form
    564,690.72/779,274.72 = 310,058.40/x
  3. Step 3: Cross multiply
    564,690.72x = 779,274.72 × 310,058.40
  4. Step 4: Simplify right side
    564,690.72x = 241,620,672,843.65
  5. Step 5: Solve for x
    x = 241,620,672,843.65/564,690.72
  6. Step 6: Final answer
    x = 427,881.43

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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.