Home / 742,812.66-1,025,144.91-420,579.54

Finding the Fourth Proportional to 742,812.66, 1,025,144.91 and 420,579.54

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Solution

The fourth proportional to 742,812.66, 1,025,144.91 and 420,579.54 is: 580,435.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,812.66 : 1,025,144.91 = 420,579.54 : x
  2. Step 2: Convert to fraction form
    742,812.66/1,025,144.91 = 420,579.54/x
  3. Step 3: Cross multiply
    742,812.66x = 1,025,144.91 × 420,579.54
  4. Step 4: Simplify right side
    742,812.66x = 431,154,974,681.14
  5. Step 5: Solve for x
    x = 431,154,974,681.14/742,812.66
  6. Step 6: Final answer
    x = 580,435.68

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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.