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Finding the Fourth Proportional to 671,920.80, 1,008,064.80 and 198,605.76

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Solution

The fourth proportional to 671,920.80, 1,008,064.80 and 198,605.76 is: 297,962.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,920.80 : 1,008,064.80 = 198,605.76 : x
  2. Step 2: Convert to fraction form
    671,920.80/1,008,064.80 = 198,605.76/x
  3. Step 3: Cross multiply
    671,920.80x = 1,008,064.80 × 198,605.76
  4. Step 4: Simplify right side
    671,920.80x = 200,207,475,733.25
  5. Step 5: Solve for x
    x = 200,207,475,733.25/671,920.80
  6. Step 6: Final answer
    x = 297,962.91

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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.