Home / 870,936.40-1,306,404.60-646,987.60

Finding the Fourth Proportional to 870,936.40, 1,306,404.60 and 646,987.60

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Solution

The fourth proportional to 870,936.40, 1,306,404.60 and 646,987.60 is: 970,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,936.40 : 1,306,404.60 = 646,987.60 : x
  2. Step 2: Convert to fraction form
    870,936.40/1,306,404.60 = 646,987.60/x
  3. Step 3: Cross multiply
    870,936.40x = 1,306,404.60 × 646,987.60
  4. Step 4: Simplify right side
    870,936.40x = 845,227,576,782.96
  5. Step 5: Solve for x
    x = 845,227,576,782.96/870,936.40
  6. Step 6: Final answer
    x = 970,481.40

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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.