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Finding the Fourth Proportional to 539,320.65, 808,209.93 and 396,041.76

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Solution

The fourth proportional to 539,320.65, 808,209.93 and 396,041.76 is: 593,496.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,320.65 : 808,209.93 = 396,041.76 : x
  2. Step 2: Convert to fraction form
    539,320.65/808,209.93 = 396,041.76/x
  3. Step 3: Cross multiply
    539,320.65x = 808,209.93 × 396,041.76
  4. Step 4: Simplify right side
    539,320.65x = 320,084,883,126.68
  5. Step 5: Solve for x
    x = 320,084,883,126.68/539,320.65
  6. Step 6: Final answer
    x = 593,496.44

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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.