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Finding the Fourth Proportional to 719,022.80, 992,256.78 and 396,744.80

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Solution

The fourth proportional to 719,022.80, 992,256.78 and 396,744.80 is: 547,510.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,022.80 : 992,256.78 = 396,744.80 : x
  2. Step 2: Convert to fraction form
    719,022.80/992,256.78 = 396,744.80/x
  3. Step 3: Cross multiply
    719,022.80x = 992,256.78 × 396,744.80
  4. Step 4: Simplify right side
    719,022.80x = 393,672,717,729.74
  5. Step 5: Solve for x
    x = 393,672,717,729.74/719,022.80
  6. Step 6: Final answer
    x = 547,510.76

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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.