Home / 811,458.06-1,217,297.85-338,032.68

Finding the Fourth Proportional to 811,458.06, 1,217,297.85 and 338,032.68

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Solution

The fourth proportional to 811,458.06, 1,217,297.85 and 338,032.68 is: 507,095.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,458.06 : 1,217,297.85 = 338,032.68 : x
  2. Step 2: Convert to fraction form
    811,458.06/1,217,297.85 = 338,032.68/x
  3. Step 3: Cross multiply
    811,458.06x = 1,217,297.85 × 338,032.68
  4. Step 4: Simplify right side
    811,458.06x = 411,486,454,593.74
  5. Step 5: Solve for x
    x = 411,486,454,593.74/811,458.06
  6. Step 6: Final answer
    x = 507,095.16

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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.