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Finding the Fourth Proportional to 631,975, 872,013.39 and 373,862.83

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Solution

The fourth proportional to 631,975, 872,013.39 and 373,862.83 is: 515,864.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,975 : 872,013.39 = 373,862.83 : x
  2. Step 2: Convert to fraction form
    631,975/872,013.39 = 373,862.83/x
  3. Step 3: Cross multiply
    631,975x = 872,013.39 × 373,862.83
  4. Step 4: Simplify right side
    631,975x = 326,013,393,783.29
  5. Step 5: Solve for x
    x = 326,013,393,783.29/631,975
  6. Step 6: Final answer
    x = 515,864.38

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1.5x scale

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.