Home / 742,752.54-1,025,023.07-420,455.97

Finding the Fourth Proportional to 742,752.54, 1,025,023.07 and 420,455.97

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Solution

The fourth proportional to 742,752.54, 1,025,023.07 and 420,455.97 is: 580,243.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,752.54 : 1,025,023.07 = 420,455.97 : x
  2. Step 2: Convert to fraction form
    742,752.54/1,025,023.07 = 420,455.97/x
  3. Step 3: Cross multiply
    742,752.54x = 1,025,023.07 × 420,455.97
  4. Step 4: Simplify right side
    742,752.54x = 430,977,070,220.37
  5. Step 5: Solve for x
    x = 430,977,070,220.37/742,752.54
  6. Step 6: Final answer
    x = 580,243.15

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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.