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Finding the Fourth Proportional to 679,648, 936,922.80 and 475,061.80

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Solution

The fourth proportional to 679,648, 936,922.80 and 475,061.80 is: 654,892.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,648 : 936,922.80 = 475,061.80 : x
  2. Step 2: Convert to fraction form
    679,648/936,922.80 = 475,061.80/x
  3. Step 3: Cross multiply
    679,648x = 936,922.80 × 475,061.80
  4. Step 4: Simplify right side
    679,648x = 445,096,231,829.04
  5. Step 5: Solve for x
    x = 445,096,231,829.04/679,648
  6. Step 6: Final answer
    x = 654,892.29

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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.