Home / 899,900.46-1,242,175.38-518,079.42

Finding the Fourth Proportional to 899,900.46, 1,242,175.38 and 518,079.42

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Solution

The fourth proportional to 899,900.46, 1,242,175.38 and 518,079.42 is: 715,129.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,900.46 : 1,242,175.38 = 518,079.42 : x
  2. Step 2: Convert to fraction form
    899,900.46/1,242,175.38 = 518,079.42/x
  3. Step 3: Cross multiply
    899,900.46x = 1,242,175.38 × 518,079.42
  4. Step 4: Simplify right side
    899,900.46x = 643,545,500,408.68
  5. Step 5: Solve for x
    x = 643,545,500,408.68/899,900.46
  6. Step 6: Final answer
    x = 715,129.65

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Double scale
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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.