Home / 842,128.66-1,263,693.26-310,023.36

Finding the Fourth Proportional to 842,128.66, 1,263,693.26 and 310,023.36

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Solution

The fourth proportional to 842,128.66, 1,263,693.26 and 310,023.36 is: 465,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,128.66 : 1,263,693.26 = 310,023.36 : x
  2. Step 2: Convert to fraction form
    842,128.66/1,263,693.26 = 310,023.36/x
  3. Step 3: Cross multiply
    842,128.66x = 1,263,693.26 × 310,023.36
  4. Step 4: Simplify right side
    842,128.66x = 391,774,430,474.55
  5. Step 5: Solve for x
    x = 391,774,430,474.55/842,128.66
  6. Step 6: Final answer
    x = 465,219.21

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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.