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Finding the Fourth Proportional to 637,164.66, 955,211.31 and 426,158.58

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Solution

The fourth proportional to 637,164.66, 955,211.31 and 426,158.58 is: 638,879.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,164.66 : 955,211.31 = 426,158.58 : x
  2. Step 2: Convert to fraction form
    637,164.66/955,211.31 = 426,158.58/x
  3. Step 3: Cross multiply
    637,164.66x = 955,211.31 × 426,158.58
  4. Step 4: Simplify right side
    637,164.66x = 407,071,495,469.54
  5. Step 5: Solve for x
    x = 407,071,495,469.54/637,164.66
  6. Step 6: Final answer
    x = 638,879.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.