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Finding the Fourth Proportional to 617,977.20, 926,965.80 and 448,703.40

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Solution

The fourth proportional to 617,977.20, 926,965.80 and 448,703.40 is: 673,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,977.20 : 926,965.80 = 448,703.40 : x
  2. Step 2: Convert to fraction form
    617,977.20/926,965.80 = 448,703.40/x
  3. Step 3: Cross multiply
    617,977.20x = 926,965.80 × 448,703.40
  4. Step 4: Simplify right side
    617,977.20x = 415,932,706,143.72
  5. Step 5: Solve for x
    x = 415,932,706,143.72/617,977.20
  6. Step 6: Final answer
    x = 673,055.10

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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.