Home / 621,776.10-858,051.03-353,504.10

Finding the Fourth Proportional to 621,776.10, 858,051.03 and 353,504.10

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Solution

The fourth proportional to 621,776.10, 858,051.03 and 353,504.10 is: 487,835.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,776.10 : 858,051.03 = 353,504.10 : x
  2. Step 2: Convert to fraction form
    621,776.10/858,051.03 = 353,504.10/x
  3. Step 3: Cross multiply
    621,776.10x = 858,051.03 × 353,504.10
  4. Step 4: Simplify right side
    621,776.10x = 303,324,557,114.22
  5. Step 5: Solve for x
    x = 303,324,557,114.22/621,776.10
  6. Step 6: Final answer
    x = 487,835.66

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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.