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Finding the Fourth Proportional to 555,917.40, 834,653.70 and 345,965.40

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Solution

The fourth proportional to 555,917.40, 834,653.70 and 345,965.40 is: 519,432.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,917.40 : 834,653.70 = 345,965.40 : x
  2. Step 2: Convert to fraction form
    555,917.40/834,653.70 = 345,965.40/x
  3. Step 3: Cross multiply
    555,917.40x = 834,653.70 × 345,965.40
  4. Step 4: Simplify right side
    555,917.40x = 288,761,301,181.98
  5. Step 5: Solve for x
    x = 288,761,301,181.98/555,917.40
  6. Step 6: Final answer
    x = 519,432.03

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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.