Home / 1,020,172.20-1,530,258.30-862,708.20

Finding the Fourth Proportional to 1,020,172.20, 1,530,258.30 and 862,708.20

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Solution

The fourth proportional to 1,020,172.20, 1,530,258.30 and 862,708.20 is: 1,294,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,172.20 : 1,530,258.30 = 862,708.20 : x
  2. Step 2: Convert to fraction form
    1,020,172.20/1,530,258.30 = 862,708.20/x
  3. Step 3: Cross multiply
    1,020,172.20x = 1,530,258.30 × 862,708.20
  4. Step 4: Simplify right side
    1,020,172.20x = 1,320,166,383,528.06
  5. Step 5: Solve for x
    x = 1,320,166,383,528.06/1,020,172.20
  6. Step 6: Final answer
    x = 1,294,062.30

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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.