Home / 870,821.40-1,303,279.65-764,533.20

Finding the Fourth Proportional to 870,821.40, 1,303,279.65 and 764,533.20

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Solution

The fourth proportional to 870,821.40, 1,303,279.65 and 764,533.20 is: 1,144,207.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,821.40 : 1,303,279.65 = 764,533.20 : x
  2. Step 2: Convert to fraction form
    870,821.40/1,303,279.65 = 764,533.20/x
  3. Step 3: Cross multiply
    870,821.40x = 1,303,279.65 × 764,533.20
  4. Step 4: Simplify right side
    870,821.40x = 996,400,561,309.38
  5. Step 5: Solve for x
    x = 996,400,561,309.38/870,821.40
  6. Step 6: Final answer
    x = 1,144,207.71

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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.