Home / 812,826.66-1,219,411.19-307,376.45

Finding the Fourth Proportional to 812,826.66, 1,219,411.19 and 307,376.45

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Solution

The fourth proportional to 812,826.66, 1,219,411.19 and 307,376.45 is: 461,129.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,826.66 : 1,219,411.19 = 307,376.45 : x
  2. Step 2: Convert to fraction form
    812,826.66/1,219,411.19 = 307,376.45/x
  3. Step 3: Cross multiply
    812,826.66x = 1,219,411.19 × 307,376.45
  4. Step 4: Simplify right side
    812,826.66x = 374,818,286,489.45
  5. Step 5: Solve for x
    x = 374,818,286,489.45/812,826.66
  6. Step 6: Final answer
    x = 461,129.42

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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.