Home / 905,999.15-1,250,279.63-498,107.93

Finding the Fourth Proportional to 905,999.15, 1,250,279.63 and 498,107.93

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Solution

The fourth proportional to 905,999.15, 1,250,279.63 and 498,107.93 is: 687,389.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,999.15 : 1,250,279.63 = 498,107.93 : x
  2. Step 2: Convert to fraction form
    905,999.15/1,250,279.63 = 498,107.93/x
  3. Step 3: Cross multiply
    905,999.15x = 1,250,279.63 × 498,107.93
  4. Step 4: Simplify right side
    905,999.15x = 622,774,198,420.47
  5. Step 5: Solve for x
    x = 622,774,198,420.47/905,999.15
  6. Step 6: Final answer
    x = 687,389.38

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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.