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Finding the Fourth Proportional to 576,490.78, 864,515.85 and 276,887.98

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Solution

The fourth proportional to 576,490.78, 864,515.85 and 276,887.98 is: 415,226.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,490.78 : 864,515.85 = 276,887.98 : x
  2. Step 2: Convert to fraction form
    576,490.78/864,515.85 = 276,887.98/x
  3. Step 3: Cross multiply
    576,490.78x = 864,515.85 × 276,887.98
  4. Step 4: Simplify right side
    576,490.78x = 239,374,047,384.48
  5. Step 5: Solve for x
    x = 239,374,047,384.48/576,490.78
  6. Step 6: Final answer
    x = 415,226.15

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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.