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Finding the Fourth Proportional to 553,309.96, 763,920.86 and 451,578.44

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Solution

The fourth proportional to 553,309.96, 763,920.86 and 451,578.44 is: 623,466.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,309.96 : 763,920.86 = 451,578.44 : x
  2. Step 2: Convert to fraction form
    553,309.96/763,920.86 = 451,578.44/x
  3. Step 3: Cross multiply
    553,309.96x = 763,920.86 × 451,578.44
  4. Step 4: Simplify right side
    553,309.96x = 344,970,190,242.26
  5. Step 5: Solve for x
    x = 344,970,190,242.26/553,309.96
  6. Step 6: Final answer
    x = 623,466.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.