Home / 870,615.64-1,305,775.62-397,189.72

Finding the Fourth Proportional to 870,615.64, 1,305,775.62 and 397,189.72

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Solution

The fourth proportional to 870,615.64, 1,305,775.62 and 397,189.72 is: 595,717.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,615.64 : 1,305,775.62 = 397,189.72 : x
  2. Step 2: Convert to fraction form
    870,615.64/1,305,775.62 = 397,189.72/x
  3. Step 3: Cross multiply
    870,615.64x = 1,305,775.62 × 397,189.72
  4. Step 4: Simplify right side
    870,615.64x = 518,640,652,890.63
  5. Step 5: Solve for x
    x = 518,640,652,890.63/870,615.64
  6. Step 6: Final answer
    x = 595,717.13

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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.