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Finding the Fourth Proportional to 719,362.84, 992,728.98 and 397,073.20

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Solution

The fourth proportional to 719,362.84, 992,728.98 and 397,073.20 is: 547,965.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,362.84 : 992,728.98 = 397,073.20 : x
  2. Step 2: Convert to fraction form
    719,362.84/992,728.98 = 397,073.20/x
  3. Step 3: Cross multiply
    719,362.84x = 992,728.98 × 397,073.20
  4. Step 4: Simplify right side
    719,362.84x = 394,186,072,821.34
  5. Step 5: Solve for x
    x = 394,186,072,821.34/719,362.84
  6. Step 6: Final answer
    x = 547,965.58

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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.