Home / 742,550.70-1,024,544.33-420,260.79

Finding the Fourth Proportional to 742,550.70, 1,024,544.33 and 420,260.79

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Solution

The fourth proportional to 742,550.70, 1,024,544.33 and 420,260.79 is: 579,860.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,550.70 : 1,024,544.33 = 420,260.79 : x
  2. Step 2: Convert to fraction form
    742,550.70/1,024,544.33 = 420,260.79/x
  3. Step 3: Cross multiply
    742,550.70x = 1,024,544.33 × 420,260.79
  4. Step 4: Simplify right side
    742,550.70x = 430,575,809,515.82
  5. Step 5: Solve for x
    x = 430,575,809,515.82/742,550.70
  6. Step 6: Final answer
    x = 579,860.49

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Double scale
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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.