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Finding the Fourth Proportional to 679,737, 938,061.12 and 373,837.02

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Solution

The fourth proportional to 679,737, 938,061.12 and 373,837.02 is: 515,908.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,737 : 938,061.12 = 373,837.02 : x
  2. Step 2: Convert to fraction form
    679,737/938,061.12 = 373,837.02/x
  3. Step 3: Cross multiply
    679,737x = 938,061.12 × 373,837.02
  4. Step 4: Simplify right side
    679,737x = 350,681,973,678.66
  5. Step 5: Solve for x
    x = 350,681,973,678.66/679,737
  6. Step 6: Final answer
    x = 515,908.32

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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.