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Finding the Fourth Proportional to 639,070.16, 885,644.96 and 630,050

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Solution

The fourth proportional to 639,070.16, 885,644.96 and 630,050 is: 873,144.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,070.16 : 885,644.96 = 630,050 : x
  2. Step 2: Convert to fraction form
    639,070.16/885,644.96 = 630,050/x
  3. Step 3: Cross multiply
    639,070.16x = 885,644.96 × 630,050
  4. Step 4: Simplify right side
    639,070.16x = 558,000,607,048
  5. Step 5: Solve for x
    x = 558,000,607,048/639,070.16
  6. Step 6: Final answer
    x = 873,144.52

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1.5x scale

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.