Home / 684,739.20-1,027,108.80-667,243.20

Finding the Fourth Proportional to 684,739.20, 1,027,108.80 and 667,243.20

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Solution

The fourth proportional to 684,739.20, 1,027,108.80 and 667,243.20 is: 1,000,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,739.20 : 1,027,108.80 = 667,243.20 : x
  2. Step 2: Convert to fraction form
    684,739.20/1,027,108.80 = 667,243.20/x
  3. Step 3: Cross multiply
    684,739.20x = 1,027,108.80 × 667,243.20
  4. Step 4: Simplify right side
    684,739.20x = 685,331,362,460.16
  5. Step 5: Solve for x
    x = 685,331,362,460.16/684,739.20
  6. Step 6: Final answer
    x = 1,000,864.80

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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.