Home / 959,321.12-1,438,731.08-285,220.88

Finding the Fourth Proportional to 959,321.12, 1,438,731.08 and 285,220.88

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Solution

The fourth proportional to 959,321.12, 1,438,731.08 and 285,220.88 is: 427,756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    959,321.12 : 1,438,731.08 = 285,220.88 : x
  2. Step 2: Convert to fraction form
    959,321.12/1,438,731.08 = 285,220.88/x
  3. Step 3: Cross multiply
    959,321.12x = 1,438,731.08 × 285,220.88
  4. Step 4: Simplify right side
    959,321.12x = 410,356,144,720.95
  5. Step 5: Solve for x
    x = 410,356,144,720.95/959,321.12
  6. Step 6: Final answer
    x = 427,756.81

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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.