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Finding the Fourth Proportional to 478,820.20, 718,230.30 and 401,837.80

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Solution

The fourth proportional to 478,820.20, 718,230.30 and 401,837.80 is: 602,756.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,820.20 : 718,230.30 = 401,837.80 : x
  2. Step 2: Convert to fraction form
    478,820.20/718,230.30 = 401,837.80/x
  3. Step 3: Cross multiply
    478,820.20x = 718,230.30 × 401,837.80
  4. Step 4: Simplify right side
    478,820.20x = 288,612,083,645.34
  5. Step 5: Solve for x
    x = 288,612,083,645.34/478,820.20
  6. Step 6: Final answer
    x = 602,756.70

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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.