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Finding the Fourth Proportional to 881,515.80, 1,322,711.10 and 349,054.20

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Solution

The fourth proportional to 881,515.80, 1,322,711.10 and 349,054.20 is: 523,754.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,515.80 : 1,322,711.10 = 349,054.20 : x
  2. Step 2: Convert to fraction form
    881,515.80/1,322,711.10 = 349,054.20/x
  3. Step 3: Cross multiply
    881,515.80x = 1,322,711.10 × 349,054.20
  4. Step 4: Simplify right side
    881,515.80x = 461,697,864,841.62
  5. Step 5: Solve for x
    x = 461,697,864,841.62/881,515.80
  6. Step 6: Final answer
    x = 523,754.50

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Double scale
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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.