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Finding the Fourth Proportional to 719,313.70, 992,582.22 and 397,003.10

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Solution

The fourth proportional to 719,313.70, 992,582.22 and 397,003.10 is: 547,825.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,313.70 : 992,582.22 = 397,003.10 : x
  2. Step 2: Convert to fraction form
    719,313.70/992,582.22 = 397,003.10/x
  3. Step 3: Cross multiply
    719,313.70x = 992,582.22 × 397,003.10
  4. Step 4: Simplify right side
    719,313.70x = 394,058,218,344.88
  5. Step 5: Solve for x
    x = 394,058,218,344.88/719,313.70
  6. Step 6: Final answer
    x = 547,825.27

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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.