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Finding the Fourth Proportional to 636,972.66, 878,921.94 and 364,988.22

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Solution

The fourth proportional to 636,972.66, 878,921.94 and 364,988.22 is: 503,626.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,972.66 : 878,921.94 = 364,988.22 : x
  2. Step 2: Convert to fraction form
    636,972.66/878,921.94 = 364,988.22/x
  3. Step 3: Cross multiply
    636,972.66x = 878,921.94 × 364,988.22
  4. Step 4: Simplify right side
    636,972.66x = 320,796,154,399.55
  5. Step 5: Solve for x
    x = 320,796,154,399.55/636,972.66
  6. Step 6: Final answer
    x = 503,626.25

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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.