Home / 439,514.10-657,521.55-380,999.70

Finding the Fourth Proportional to 439,514.10, 657,521.55 and 380,999.70

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Solution

The fourth proportional to 439,514.10, 657,521.55 and 380,999.70 is: 569,982.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,514.10 : 657,521.55 = 380,999.70 : x
  2. Step 2: Convert to fraction form
    439,514.10/657,521.55 = 380,999.70/x
  3. Step 3: Cross multiply
    439,514.10x = 657,521.55 × 380,999.70
  4. Step 4: Simplify right side
    439,514.10x = 250,515,513,293.54
  5. Step 5: Solve for x
    x = 250,515,513,293.54/439,514.10
  6. Step 6: Final answer
    x = 569,982.88

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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.