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Finding the Fourth Proportional to 519,972, 779,859.36 and 253,464.48

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Solution

The fourth proportional to 519,972, 779,859.36 and 253,464.48 is: 380,148.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,972 : 779,859.36 = 253,464.48 : x
  2. Step 2: Convert to fraction form
    519,972/779,859.36 = 253,464.48/x
  3. Step 3: Cross multiply
    519,972x = 779,859.36 × 253,464.48
  4. Step 4: Simplify right side
    519,972x = 197,666,647,155.53
  5. Step 5: Solve for x
    x = 197,666,647,155.53/519,972
  6. Step 6: Final answer
    x = 380,148.64

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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.