Home / 812,870.92-1,219,345.26-392,500.36

Finding the Fourth Proportional to 812,870.92, 1,219,345.26 and 392,500.36

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Solution

The fourth proportional to 812,870.92, 1,219,345.26 and 392,500.36 is: 588,769.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,870.92 : 1,219,345.26 = 392,500.36 : x
  2. Step 2: Convert to fraction form
    812,870.92/1,219,345.26 = 392,500.36/x
  3. Step 3: Cross multiply
    812,870.92x = 1,219,345.26 × 392,500.36
  4. Step 4: Simplify right side
    812,870.92x = 478,593,453,514.29
  5. Step 5: Solve for x
    x = 478,593,453,514.29/812,870.92
  6. Step 6: Final answer
    x = 588,769.31

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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.