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Finding the Fourth Proportional to 555,558.35, 766,732.70 and 313,856.46

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Solution

The fourth proportional to 555,558.35, 766,732.70 and 313,856.46 is: 433,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,558.35 : 766,732.70 = 313,856.46 : x
  2. Step 2: Convert to fraction form
    555,558.35/766,732.70 = 313,856.46/x
  3. Step 3: Cross multiply
    555,558.35x = 766,732.70 × 313,856.46
  4. Step 4: Simplify right side
    555,558.35x = 240,644,011,772.88
  5. Step 5: Solve for x
    x = 240,644,011,772.88/555,558.35
  6. Step 6: Final answer
    x = 433,157.05

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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.