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Finding the Fourth Proportional to 539,105.79, 744,205.05 and 348,212.28

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Solution

The fourth proportional to 539,105.79, 744,205.05 and 348,212.28 is: 480,687.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,105.79 : 744,205.05 = 348,212.28 : x
  2. Step 2: Convert to fraction form
    539,105.79/744,205.05 = 348,212.28/x
  3. Step 3: Cross multiply
    539,105.79x = 744,205.05 × 348,212.28
  4. Step 4: Simplify right side
    539,105.79x = 259,141,337,248.01
  5. Step 5: Solve for x
    x = 259,141,337,248.01/539,105.79
  6. Step 6: Final answer
    x = 480,687.36

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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.