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Finding the Fourth Proportional to 508,454.69, 701,665.54 and 279,015.84

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Solution

The fourth proportional to 508,454.69, 701,665.54 and 279,015.84 is: 385,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,454.69 : 701,665.54 = 279,015.84 : x
  2. Step 2: Convert to fraction form
    508,454.69/701,665.54 = 279,015.84/x
  3. Step 3: Cross multiply
    508,454.69x = 701,665.54 × 279,015.84
  4. Step 4: Simplify right side
    508,454.69x = 195,775,799,344.61
  5. Step 5: Solve for x
    x = 195,775,799,344.61/508,454.69
  6. Step 6: Final answer
    x = 385,040.80

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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.