Home / 1,279,403.72-1,918,575.06-520,730.27

Finding the Fourth Proportional to 1,279,403.72, 1,918,575.06 and 520,730.27

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Solution

The fourth proportional to 1,279,403.72, 1,918,575.06 and 520,730.27 is: 780,879.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,403.72 : 1,918,575.06 = 520,730.27 : x
  2. Step 2: Convert to fraction form
    1,279,403.72/1,918,575.06 = 520,730.27/x
  3. Step 3: Cross multiply
    1,279,403.72x = 1,918,575.06 × 520,730.27
  4. Step 4: Simplify right side
    1,279,403.72x = 999,060,109,009.07
  5. Step 5: Solve for x
    x = 999,060,109,009.07/1,279,403.72
  6. Step 6: Final answer
    x = 780,879.48

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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.