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Finding the Fourth Proportional to 667,098.98, 920,579.54 and 372,751.06

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Solution

The fourth proportional to 667,098.98, 920,579.54 and 372,751.06 is: 514,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,098.98 : 920,579.54 = 372,751.06 : x
  2. Step 2: Convert to fraction form
    667,098.98/920,579.54 = 372,751.06/x
  3. Step 3: Cross multiply
    667,098.98x = 920,579.54 × 372,751.06
  4. Step 4: Simplify right side
    667,098.98x = 343,146,999,349.31
  5. Step 5: Solve for x
    x = 343,146,999,349.31/667,098.98
  6. Step 6: Final answer
    x = 514,386.93

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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.