Home / 812,873.16-1,219,339.08-280,411.56

Finding the Fourth Proportional to 812,873.16, 1,219,339.08 and 280,411.56

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Solution

The fourth proportional to 812,873.16, 1,219,339.08 and 280,411.56 is: 420,627.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,873.16 : 1,219,339.08 = 280,411.56 : x
  2. Step 2: Convert to fraction form
    812,873.16/1,219,339.08 = 280,411.56/x
  3. Step 3: Cross multiply
    812,873.16x = 1,219,339.08 × 280,411.56
  4. Step 4: Simplify right side
    812,873.16x = 341,916,773,591.77
  5. Step 5: Solve for x
    x = 341,916,773,591.77/812,873.16
  6. Step 6: Final answer
    x = 420,627.46

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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.