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Finding the Fourth Proportional to 485,514.13, 670,009.62 and 270,649.57

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Solution

The fourth proportional to 485,514.13, 670,009.62 and 270,649.57 is: 373,496.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,514.13 : 670,009.62 = 270,649.57 : x
  2. Step 2: Convert to fraction form
    485,514.13/670,009.62 = 270,649.57/x
  3. Step 3: Cross multiply
    485,514.13x = 670,009.62 × 270,649.57
  4. Step 4: Simplify right side
    485,514.13x = 181,337,815,548.86
  5. Step 5: Solve for x
    x = 181,337,815,548.86/485,514.13
  6. Step 6: Final answer
    x = 373,496.47

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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.