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Finding the Fourth Proportional to 483,935.40, 725,903.10 and 421,727.40

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Solution

The fourth proportional to 483,935.40, 725,903.10 and 421,727.40 is: 632,591.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,935.40 : 725,903.10 = 421,727.40 : x
  2. Step 2: Convert to fraction form
    483,935.40/725,903.10 = 421,727.40/x
  3. Step 3: Cross multiply
    483,935.40x = 725,903.10 × 421,727.40
  4. Step 4: Simplify right side
    483,935.40x = 306,133,227,014.94
  5. Step 5: Solve for x
    x = 306,133,227,014.94/483,935.40
  6. Step 6: Final answer
    x = 632,591.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.