Home / 742,743.16-1,025,010.14-420,446.60

Finding the Fourth Proportional to 742,743.16, 1,025,010.14 and 420,446.60

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Solution

The fourth proportional to 742,743.16, 1,025,010.14 and 420,446.60 is: 580,230.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,743.16 : 1,025,010.14 = 420,446.60 : x
  2. Step 2: Convert to fraction form
    742,743.16/1,025,010.14 = 420,446.60/x
  3. Step 3: Cross multiply
    742,743.16x = 1,025,010.14 × 420,446.60
  4. Step 4: Simplify right side
    742,743.16x = 430,962,028,328.52
  5. Step 5: Solve for x
    x = 430,962,028,328.52/742,743.16
  6. Step 6: Final answer
    x = 580,230.22

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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.