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Finding the Fourth Proportional to 667,288.80, 1,001,710.80 and 401,349.60

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Solution

The fourth proportional to 667,288.80, 1,001,710.80 and 401,349.60 is: 602,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,288.80 : 1,001,710.80 = 401,349.60 : x
  2. Step 2: Convert to fraction form
    667,288.80/1,001,710.80 = 401,349.60/x
  3. Step 3: Cross multiply
    667,288.80x = 1,001,710.80 × 401,349.60
  4. Step 4: Simplify right side
    667,288.80x = 402,036,228,895.68
  5. Step 5: Solve for x
    x = 402,036,228,895.68/667,288.80
  6. Step 6: Final answer
    x = 602,492.10

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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.