Home / 719,129.72-992,380.74-396,835.58

Finding the Fourth Proportional to 719,129.72, 992,380.74 and 396,835.58

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Solution

The fourth proportional to 719,129.72, 992,380.74 and 396,835.58 is: 547,623.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,129.72 : 992,380.74 = 396,835.58 : x
  2. Step 2: Convert to fraction form
    719,129.72/992,380.74 = 396,835.58/x
  3. Step 3: Cross multiply
    719,129.72x = 992,380.74 × 396,835.58
  4. Step 4: Simplify right side
    719,129.72x = 393,811,986,538.73
  5. Step 5: Solve for x
    x = 393,811,986,538.73/719,129.72
  6. Step 6: Final answer
    x = 547,623.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.