Home / 671,679.30-1,008,296.55-405,740.10

Finding the Fourth Proportional to 671,679.30, 1,008,296.55 and 405,740.10

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Solution

The fourth proportional to 671,679.30, 1,008,296.55 and 405,740.10 is: 609,079.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,679.30 : 1,008,296.55 = 405,740.10 : x
  2. Step 2: Convert to fraction form
    671,679.30/1,008,296.55 = 405,740.10/x
  3. Step 3: Cross multiply
    671,679.30x = 1,008,296.55 × 405,740.10
  4. Step 4: Simplify right side
    671,679.30x = 409,106,343,026.66
  5. Step 5: Solve for x
    x = 409,106,343,026.66/671,679.30
  6. Step 6: Final answer
    x = 609,079.87

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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.