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Finding the Fourth Proportional to 418,601.36, 576,693.60 and 291,055.52

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Solution

The fourth proportional to 418,601.36, 576,693.60 and 291,055.52 is: 400,977.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,601.36 : 576,693.60 = 291,055.52 : x
  2. Step 2: Convert to fraction form
    418,601.36/576,693.60 = 291,055.52/x
  3. Step 3: Cross multiply
    418,601.36x = 576,693.60 × 291,055.52
  4. Step 4: Simplify right side
    418,601.36x = 167,849,855,628.67
  5. Step 5: Solve for x
    x = 167,849,855,628.67/418,601.36
  6. Step 6: Final answer
    x = 400,977.81

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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.