Home / 742,751.42-1,025,021.52-420,454.85

Finding the Fourth Proportional to 742,751.42, 1,025,021.52 and 420,454.85

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Solution

The fourth proportional to 742,751.42, 1,025,021.52 and 420,454.85 is: 580,241.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,751.42 : 1,025,021.52 = 420,454.85 : x
  2. Step 2: Convert to fraction form
    742,751.42/1,025,021.52 = 420,454.85/x
  3. Step 3: Cross multiply
    742,751.42x = 1,025,021.52 × 420,454.85
  4. Step 4: Simplify right side
    742,751.42x = 430,975,264,313.26
  5. Step 5: Solve for x
    x = 430,975,264,313.26/742,751.42
  6. Step 6: Final answer
    x = 580,241.59

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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.