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Finding the Fourth Proportional to 647,574.80, 971,362.20 and 436,067.60

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Solution

The fourth proportional to 647,574.80, 971,362.20 and 436,067.60 is: 654,101.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,574.80 : 971,362.20 = 436,067.60 : x
  2. Step 2: Convert to fraction form
    647,574.80/971,362.20 = 436,067.60/x
  3. Step 3: Cross multiply
    647,574.80x = 971,362.20 × 436,067.60
  4. Step 4: Simplify right side
    647,574.80x = 423,579,583,284.72
  5. Step 5: Solve for x
    x = 423,579,583,284.72/647,574.80
  6. Step 6: Final answer
    x = 654,101.40

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Similar ratio
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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.