Home / 870,820.40-1,303,278.15-764,532.20

Finding the Fourth Proportional to 870,820.40, 1,303,278.15 and 764,532.20

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Solution

The fourth proportional to 870,820.40, 1,303,278.15 and 764,532.20 is: 1,144,206.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,820.40 : 1,303,278.15 = 764,532.20 : x
  2. Step 2: Convert to fraction form
    870,820.40/1,303,278.15 = 764,532.20/x
  3. Step 3: Cross multiply
    870,820.40x = 1,303,278.15 × 764,532.20
  4. Step 4: Simplify right side
    870,820.40x = 996,398,111,231.43
  5. Step 5: Solve for x
    x = 996,398,111,231.43/870,820.40
  6. Step 6: Final answer
    x = 1,144,206.21

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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.