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Finding the Fourth Proportional to 679,739, 938,063.88 and 373,839.02

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Solution

The fourth proportional to 679,739, 938,063.88 and 373,839.02 is: 515,911.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,739 : 938,063.88 = 373,839.02 : x
  2. Step 2: Convert to fraction form
    679,739/938,063.88 = 373,839.02/x
  3. Step 3: Cross multiply
    679,739x = 938,063.88 × 373,839.02
  4. Step 4: Simplify right side
    679,739x = 350,684,881,596.60
  5. Step 5: Solve for x
    x = 350,684,881,596.60/679,739
  6. Step 6: Final answer
    x = 515,911.08

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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.