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Finding the Fourth Proportional to 859,134.96, 1,288,860.96 and 282,790.80

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Solution

The fourth proportional to 859,134.96, 1,288,860.96 and 282,790.80 is: 424,238.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,134.96 : 1,288,860.96 = 282,790.80 : x
  2. Step 2: Convert to fraction form
    859,134.96/1,288,860.96 = 282,790.80/x
  3. Step 3: Cross multiply
    859,134.96x = 1,288,860.96 × 282,790.80
  4. Step 4: Simplify right side
    859,134.96x = 364,478,021,967.17
  5. Step 5: Solve for x
    x = 364,478,021,967.17/859,134.96
  6. Step 6: Final answer
    x = 424,238.38

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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.