Home / 747,440.12-1,121,307.72-274,129.58

Finding the Fourth Proportional to 747,440.12, 1,121,307.72 and 274,129.58

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Solution

The fourth proportional to 747,440.12, 1,121,307.72 and 274,129.58 is: 411,248.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,440.12 : 1,121,307.72 = 274,129.58 : x
  2. Step 2: Convert to fraction form
    747,440.12/1,121,307.72 = 274,129.58/x
  3. Step 3: Cross multiply
    747,440.12x = 1,121,307.72 × 274,129.58
  4. Step 4: Simplify right side
    747,440.12x = 307,383,611,344.26
  5. Step 5: Solve for x
    x = 307,383,611,344.26/747,440.12
  6. Step 6: Final answer
    x = 411,248.48

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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.