Home / 742,958.64-1,025,254.80-420,604.56

Finding the Fourth Proportional to 742,958.64, 1,025,254.80 and 420,604.56

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Solution

The fourth proportional to 742,958.64, 1,025,254.80 and 420,604.56 is: 580,418.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,958.64 : 1,025,254.80 = 420,604.56 : x
  2. Step 2: Convert to fraction form
    742,958.64/1,025,254.80 = 420,604.56/x
  3. Step 3: Cross multiply
    742,958.64x = 1,025,254.80 × 420,604.56
  4. Step 4: Simplify right side
    742,958.64x = 431,226,844,041.89
  5. Step 5: Solve for x
    x = 431,226,844,041.89/742,958.64
  6. Step 6: Final answer
    x = 580,418.37

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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.