Home / 742,703.15-1,024,933.43-420,475.43

Finding the Fourth Proportional to 742,703.15, 1,024,933.43 and 420,475.43

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Solution

The fourth proportional to 742,703.15, 1,024,933.43 and 420,475.43 is: 580,257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,703.15 : 1,024,933.43 = 420,475.43 : x
  2. Step 2: Convert to fraction form
    742,703.15/1,024,933.43 = 420,475.43/x
  3. Step 3: Cross multiply
    742,703.15x = 1,024,933.43 × 420,475.43
  4. Step 4: Simplify right side
    742,703.15x = 430,959,324,700.63
  5. Step 5: Solve for x
    x = 430,959,324,700.63/742,703.15
  6. Step 6: Final answer
    x = 580,257.84

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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.