Home / 689,140.63-950,931.41-383,140.18

Finding the Fourth Proportional to 689,140.63, 950,931.41 and 383,140.18

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Solution

The fourth proportional to 689,140.63, 950,931.41 and 383,140.18 is: 528,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,140.63 : 950,931.41 = 383,140.18 : x
  2. Step 2: Convert to fraction form
    689,140.63/950,931.41 = 383,140.18/x
  3. Step 3: Cross multiply
    689,140.63x = 950,931.41 × 383,140.18
  4. Step 4: Simplify right side
    689,140.63x = 364,340,034,081.30
  5. Step 5: Solve for x
    x = 364,340,034,081.30/689,140.63
  6. Step 6: Final answer
    x = 528,687.49

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Double scale
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Similar ratio
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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.