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Finding the Fourth Proportional to 665,574.46, 919,250.40 and 447,404.32

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Solution

The fourth proportional to 665,574.46, 919,250.40 and 447,404.32 is: 617,927.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,574.46 : 919,250.40 = 447,404.32 : x
  2. Step 2: Convert to fraction form
    665,574.46/919,250.40 = 447,404.32/x
  3. Step 3: Cross multiply
    665,574.46x = 919,250.40 × 447,404.32
  4. Step 4: Simplify right side
    665,574.46x = 411,276,600,121.73
  5. Step 5: Solve for x
    x = 411,276,600,121.73/665,574.46
  6. Step 6: Final answer
    x = 617,927.26

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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.