Home / 790,523.55-1,185,120.72-640,391.67

Finding the Fourth Proportional to 790,523.55, 1,185,120.72 and 640,391.67

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Solution

The fourth proportional to 790,523.55, 1,185,120.72 and 640,391.67 is: 960,049.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,523.55 : 1,185,120.72 = 640,391.67 : x
  2. Step 2: Convert to fraction form
    790,523.55/1,185,120.72 = 640,391.67/x
  3. Step 3: Cross multiply
    790,523.55x = 1,185,120.72 × 640,391.67
  4. Step 4: Simplify right side
    790,523.55x = 758,941,437,032.40
  5. Step 5: Solve for x
    x = 758,941,437,032.40/790,523.55
  6. Step 6: Final answer
    x = 960,049.12

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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.