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Finding the Fourth Proportional to 637,162.66, 955,208.31 and 426,156.58

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Solution

The fourth proportional to 637,162.66, 955,208.31 and 426,156.58 is: 638,876.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,162.66 : 955,208.31 = 426,156.58 : x
  2. Step 2: Convert to fraction form
    637,162.66/955,208.31 = 426,156.58/x
  3. Step 3: Cross multiply
    637,162.66x = 955,208.31 × 426,156.58
  4. Step 4: Simplify right side
    637,162.66x = 407,068,306,577.18
  5. Step 5: Solve for x
    x = 407,068,306,577.18/637,162.66
  6. Step 6: Final answer
    x = 638,876.59

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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.