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Finding the Fourth Proportional to 511,490.30, 766,819.37 and 191,462.92

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Solution

The fourth proportional to 511,490.30, 766,819.37 and 191,462.92 is: 287,038.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,490.30 : 766,819.37 = 191,462.92 : x
  2. Step 2: Convert to fraction form
    511,490.30/766,819.37 = 191,462.92/x
  3. Step 3: Cross multiply
    511,490.30x = 766,819.37 × 191,462.92
  4. Step 4: Simplify right side
    511,490.30x = 146,817,472,818.40
  5. Step 5: Solve for x
    x = 146,817,472,818.40/511,490.30
  6. Step 6: Final answer
    x = 287,038.62

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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.