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Finding the Fourth Proportional to 639,068.16, 885,642.24 and 630,048

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Solution

The fourth proportional to 639,068.16, 885,642.24 and 630,048 is: 873,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,068.16 : 885,642.24 = 630,048 : x
  2. Step 2: Convert to fraction form
    639,068.16/885,642.24 = 630,048/x
  3. Step 3: Cross multiply
    639,068.16x = 885,642.24 × 630,048
  4. Step 4: Simplify right side
    639,068.16x = 557,997,122,027.52
  5. Step 5: Solve for x
    x = 557,997,122,027.52/639,068.16
  6. Step 6: Final answer
    x = 873,141.80

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.