Home / 689,012.40-950,868.76-383,120.16

Finding the Fourth Proportional to 689,012.40, 950,868.76 and 383,120.16

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Solution

The fourth proportional to 689,012.40, 950,868.76 and 383,120.16 is: 528,723.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,012.40 : 950,868.76 = 383,120.16 : x
  2. Step 2: Convert to fraction form
    689,012.40/950,868.76 = 383,120.16/x
  3. Step 3: Cross multiply
    689,012.40x = 950,868.76 × 383,120.16
  4. Step 4: Simplify right side
    689,012.40x = 364,296,991,470.20
  5. Step 5: Solve for x
    x = 364,296,991,470.20/689,012.40
  6. Step 6: Final answer
    x = 528,723.42

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Double scale
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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.