Home / 1,301,383.20-1,795,947.12-728,421.60

Finding the Fourth Proportional to 1,301,383.20, 1,795,947.12 and 728,421.60

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Solution

The fourth proportional to 1,301,383.20, 1,795,947.12 and 728,421.60 is: 1,005,243.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301,383.20 : 1,795,947.12 = 728,421.60 : x
  2. Step 2: Convert to fraction form
    1,301,383.20/1,795,947.12 = 728,421.60/x
  3. Step 3: Cross multiply
    1,301,383.20x = 1,795,947.12 × 728,421.60
  4. Step 4: Simplify right side
    1,301,383.20x = 1,308,206,674,665.79
  5. Step 5: Solve for x
    x = 1,308,206,674,665.79/1,301,383.20
  6. Step 6: Final answer
    x = 1,005,243.25

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1.5x scale

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.