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Finding the Fourth Proportional to 703,220.48, 970,386.59 and 397,323.38

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Solution

The fourth proportional to 703,220.48, 970,386.59 and 397,323.38 is: 548,273.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,220.48 : 970,386.59 = 397,323.38 : x
  2. Step 2: Convert to fraction form
    703,220.48/970,386.59 = 397,323.38/x
  3. Step 3: Cross multiply
    703,220.48x = 970,386.59 × 397,323.38
  4. Step 4: Simplify right side
    703,220.48x = 385,557,279,845.47
  5. Step 5: Solve for x
    x = 385,557,279,845.47/703,220.48
  6. Step 6: Final answer
    x = 548,273.68

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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.