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Finding the Fourth Proportional to 702,976.02, 970,105.16 and 380,686.12

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Solution

The fourth proportional to 702,976.02, 970,105.16 and 380,686.12 is: 525,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,976.02 : 970,105.16 = 380,686.12 : x
  2. Step 2: Convert to fraction form
    702,976.02/970,105.16 = 380,686.12/x
  3. Step 3: Cross multiply
    702,976.02x = 970,105.16 × 380,686.12
  4. Step 4: Simplify right side
    702,976.02x = 369,305,569,352.38
  5. Step 5: Solve for x
    x = 369,305,569,352.38/702,976.02
  6. Step 6: Final answer
    x = 525,345.90

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Double scale
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Similar ratio
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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.