Home / 870,022.20-1,305,263.70-308,998.20

Finding the Fourth Proportional to 870,022.20, 1,305,263.70 and 308,998.20

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Solution

The fourth proportional to 870,022.20, 1,305,263.70 and 308,998.20 is: 463,579.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,022.20 : 1,305,263.70 = 308,998.20 : x
  2. Step 2: Convert to fraction form
    870,022.20/1,305,263.70 = 308,998.20/x
  3. Step 3: Cross multiply
    870,022.20x = 1,305,263.70 × 308,998.20
  4. Step 4: Simplify right side
    870,022.20x = 403,324,133,825.34
  5. Step 5: Solve for x
    x = 403,324,133,825.34/870,022.20
  6. Step 6: Final answer
    x = 463,579.13

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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.