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Finding the Fourth Proportional to 539,973.35, 809,478.71 and 255,486.34

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Solution

The fourth proportional to 539,973.35, 809,478.71 and 255,486.34 is: 383,001.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,973.35 : 809,478.71 = 255,486.34 : x
  2. Step 2: Convert to fraction form
    539,973.35/809,478.71 = 255,486.34/x
  3. Step 3: Cross multiply
    539,973.35x = 809,478.71 × 255,486.34
  4. Step 4: Simplify right side
    539,973.35x = 206,810,752,925.82
  5. Step 5: Solve for x
    x = 206,810,752,925.82/539,973.35
  6. Step 6: Final answer
    x = 383,001.78

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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.