Home / 870,435.64-1,201,287.46-488,463.92

Finding the Fourth Proportional to 870,435.64, 1,201,287.46 and 488,463.92

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Solution

The fourth proportional to 870,435.64, 1,201,287.46 and 488,463.92 is: 674,128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,435.64 : 1,201,287.46 = 488,463.92 : x
  2. Step 2: Convert to fraction form
    870,435.64/1,201,287.46 = 488,463.92/x
  3. Step 3: Cross multiply
    870,435.64x = 1,201,287.46 × 488,463.92
  4. Step 4: Simplify right side
    870,435.64x = 586,785,581,758.44
  5. Step 5: Solve for x
    x = 586,785,581,758.44/870,435.64
  6. Step 6: Final answer
    x = 674,128.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.