Home / 539,110.40-743,932.80-312,712.32

Finding the Fourth Proportional to 539,110.40, 743,932.80 and 312,712.32

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Solution

The fourth proportional to 539,110.40, 743,932.80 and 312,712.32 is: 431,520.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,110.40 : 743,932.80 = 312,712.32 : x
  2. Step 2: Convert to fraction form
    539,110.40/743,932.80 = 312,712.32/x
  3. Step 3: Cross multiply
    539,110.40x = 743,932.80 × 312,712.32
  4. Step 4: Simplify right side
    539,110.40x = 232,636,951,812.10
  5. Step 5: Solve for x
    x = 232,636,951,812.10/539,110.40
  6. Step 6: Final answer
    x = 431,520.06

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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.