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Finding the Fourth Proportional to 539,867.80, 810,292.46 and 287,359.51

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Solution

The fourth proportional to 539,867.80, 810,292.46 and 287,359.51 is: 431,300.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,867.80 : 810,292.46 = 287,359.51 : x
  2. Step 2: Convert to fraction form
    539,867.80/810,292.46 = 287,359.51/x
  3. Step 3: Cross multiply
    539,867.80x = 810,292.46 × 287,359.51
  4. Step 4: Simplify right side
    539,867.80x = 232,845,244,262.30
  5. Step 5: Solve for x
    x = 232,845,244,262.30/539,867.80
  6. Step 6: Final answer
    x = 431,300.49

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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.