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Finding the Fourth Proportional to 634,138.98, 876,271.56 and 461,757.54

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Solution

The fourth proportional to 634,138.98, 876,271.56 and 461,757.54 is: 638,069.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,138.98 : 876,271.56 = 461,757.54 : x
  2. Step 2: Convert to fraction form
    634,138.98/876,271.56 = 461,757.54/x
  3. Step 3: Cross multiply
    634,138.98x = 876,271.56 × 461,757.54
  4. Step 4: Simplify right side
    634,138.98x = 404,624,999,917.56
  5. Step 5: Solve for x
    x = 404,624,999,917.56/634,138.98
  6. Step 6: Final answer
    x = 638,069.91

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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.