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Finding the Fourth Proportional to 550,920.71, 822,671.16 and 449,919.13

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Solution

The fourth proportional to 550,920.71, 822,671.16 and 449,919.13 is: 671,848.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,920.71 : 822,671.16 = 449,919.13 : x
  2. Step 2: Convert to fraction form
    550,920.71/822,671.16 = 449,919.13/x
  3. Step 3: Cross multiply
    550,920.71x = 822,671.16 × 449,919.13
  4. Step 4: Simplify right side
    550,920.71x = 370,135,489,401.82
  5. Step 5: Solve for x
    x = 370,135,489,401.82/550,920.71
  6. Step 6: Final answer
    x = 671,848.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.