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Finding the Fourth Proportional to 630,512.91, 869,091.12 and 426,489.30

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Solution

The fourth proportional to 630,512.91, 869,091.12 and 426,489.30 is: 587,867.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,512.91 : 869,091.12 = 426,489.30 : x
  2. Step 2: Convert to fraction form
    630,512.91/869,091.12 = 426,489.30/x
  3. Step 3: Cross multiply
    630,512.91x = 869,091.12 × 426,489.30
  4. Step 4: Simplify right side
    630,512.91x = 370,658,063,405.02
  5. Step 5: Solve for x
    x = 370,658,063,405.02/630,512.91
  6. Step 6: Final answer
    x = 587,867.52

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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.