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Finding the Fourth Proportional to 657,974.40, 985,406.40 and 446,467.20

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Solution

The fourth proportional to 657,974.40, 985,406.40 and 446,467.20 is: 668,645.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,974.40 : 985,406.40 = 446,467.20 : x
  2. Step 2: Convert to fraction form
    657,974.40/985,406.40 = 446,467.20/x
  3. Step 3: Cross multiply
    657,974.40x = 985,406.40 × 446,467.20
  4. Step 4: Simplify right side
    657,974.40x = 439,951,636,270.08
  5. Step 5: Solve for x
    x = 439,951,636,270.08/657,974.40
  6. Step 6: Final answer
    x = 668,645.52

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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.