Home / 855,647.20-1,180,422.48-515,926.72

Finding the Fourth Proportional to 855,647.20, 1,180,422.48 and 515,926.72

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Solution

The fourth proportional to 855,647.20, 1,180,422.48 and 515,926.72 is: 711,755.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,647.20 : 1,180,422.48 = 515,926.72 : x
  2. Step 2: Convert to fraction form
    855,647.20/1,180,422.48 = 515,926.72/x
  3. Step 3: Cross multiply
    855,647.20x = 1,180,422.48 × 515,926.72
  4. Step 4: Simplify right side
    855,647.20x = 609,011,498,320.67
  5. Step 5: Solve for x
    x = 609,011,498,320.67/855,647.20
  6. Step 6: Final answer
    x = 711,755.38

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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.