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Finding the Fourth Proportional to 521,818.20, 720,106.20 and 295,463.70

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Solution

The fourth proportional to 521,818.20, 720,106.20 and 295,463.70 is: 407,738.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,818.20 : 720,106.20 = 295,463.70 : x
  2. Step 2: Convert to fraction form
    521,818.20/720,106.20 = 295,463.70/x
  3. Step 3: Cross multiply
    521,818.20x = 720,106.20 × 295,463.70
  4. Step 4: Simplify right side
    521,818.20x = 212,765,242,244.94
  5. Step 5: Solve for x
    x = 212,765,242,244.94/521,818.20
  6. Step 6: Final answer
    x = 407,738.25

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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.