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Finding the Fourth Proportional to 636,846.03, 878,909.67 and 475,420.86

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Solution

The fourth proportional to 636,846.03, 878,909.67 and 475,420.86 is: 656,127.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,846.03 : 878,909.67 = 475,420.86 : x
  2. Step 2: Convert to fraction form
    636,846.03/878,909.67 = 475,420.86/x
  3. Step 3: Cross multiply
    636,846.03x = 878,909.67 × 475,420.86
  4. Step 4: Simplify right side
    636,846.03x = 417,851,991,173.72
  5. Step 5: Solve for x
    x = 417,851,991,173.72/636,846.03
  6. Step 6: Final answer
    x = 656,127.18

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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.