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Finding the Fourth Proportional to 539,083.80, 808,625.70 and 339,629.40

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Solution

The fourth proportional to 539,083.80, 808,625.70 and 339,629.40 is: 509,444.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,083.80 : 808,625.70 = 339,629.40 : x
  2. Step 2: Convert to fraction form
    539,083.80/808,625.70 = 339,629.40/x
  3. Step 3: Cross multiply
    539,083.80x = 808,625.70 × 339,629.40
  4. Step 4: Simplify right side
    539,083.80x = 274,633,061,315.58
  5. Step 5: Solve for x
    x = 274,633,061,315.58/539,083.80
  6. Step 6: Final answer
    x = 509,444.10

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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.