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Finding the Fourth Proportional to 639,073.16, 885,649.13 and 630,053

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Solution

The fourth proportional to 639,073.16, 885,649.13 and 630,053 is: 873,148.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,073.16 : 885,649.13 = 630,053 : x
  2. Step 2: Convert to fraction form
    639,073.16/885,649.13 = 630,053/x
  3. Step 3: Cross multiply
    639,073.16x = 885,649.13 × 630,053
  4. Step 4: Simplify right side
    639,073.16x = 558,005,891,303.89
  5. Step 5: Solve for x
    x = 558,005,891,303.89/639,073.16
  6. Step 6: Final answer
    x = 873,148.69

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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.