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Finding the Fourth Proportional to 500,148.72, 751,848.76 and 401,391.08

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Solution

The fourth proportional to 500,148.72, 751,848.76 and 401,391.08 is: 603,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,148.72 : 751,848.76 = 401,391.08 : x
  2. Step 2: Convert to fraction form
    500,148.72/751,848.76 = 401,391.08/x
  3. Step 3: Cross multiply
    500,148.72x = 751,848.76 × 401,391.08
  4. Step 4: Simplify right side
    500,148.72x = 301,785,385,773.06
  5. Step 5: Solve for x
    x = 301,785,385,773.06/500,148.72
  6. Step 6: Final answer
    x = 603,391.30

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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.