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Finding the Fourth Proportional to 666,622.66, 920,059.03 and 376,322.71

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Solution

The fourth proportional to 666,622.66, 920,059.03 and 376,322.71 is: 519,392.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,622.66 : 920,059.03 = 376,322.71 : x
  2. Step 2: Convert to fraction form
    666,622.66/920,059.03 = 376,322.71/x
  3. Step 3: Cross multiply
    666,622.66x = 920,059.03 × 376,322.71
  4. Step 4: Simplify right side
    666,622.66x = 346,239,107,948.11
  5. Step 5: Solve for x
    x = 346,239,107,948.11/666,622.66
  6. Step 6: Final answer
    x = 519,392.95

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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.