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Finding the Fourth Proportional to 519,974, 779,862.36 and 253,466.48

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Solution

The fourth proportional to 519,974, 779,862.36 and 253,466.48 is: 380,151.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,974 : 779,862.36 = 253,466.48 : x
  2. Step 2: Convert to fraction form
    519,974/779,862.36 = 253,466.48/x
  3. Step 3: Cross multiply
    519,974x = 779,862.36 × 253,466.48
  4. Step 4: Simplify right side
    519,974x = 197,668,967,273.69
  5. Step 5: Solve for x
    x = 197,668,967,273.69/519,974
  6. Step 6: Final answer
    x = 380,151.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.