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Finding the Fourth Proportional to 550,374.18, 758,813.28 and 356,439.22

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Solution

The fourth proportional to 550,374.18, 758,813.28 and 356,439.22 is: 491,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,374.18 : 758,813.28 = 356,439.22 : x
  2. Step 2: Convert to fraction form
    550,374.18/758,813.28 = 356,439.22/x
  3. Step 3: Cross multiply
    550,374.18x = 758,813.28 × 356,439.22
  4. Step 4: Simplify right side
    550,374.18x = 270,470,813,648.84
  5. Step 5: Solve for x
    x = 270,470,813,648.84/550,374.18
  6. Step 6: Final answer
    x = 491,430.78

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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.