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Finding the Fourth Proportional to 462,649.20, 695,010.60 and 443,756.40

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Solution

The fourth proportional to 462,649.20, 695,010.60 and 443,756.40 is: 666,629.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,649.20 : 695,010.60 = 443,756.40 : x
  2. Step 2: Convert to fraction form
    462,649.20/695,010.60 = 443,756.40/x
  3. Step 3: Cross multiply
    462,649.20x = 695,010.60 × 443,756.40
  4. Step 4: Simplify right side
    462,649.20x = 308,415,401,817.84
  5. Step 5: Solve for x
    x = 308,415,401,817.84/462,649.20
  6. Step 6: Final answer
    x = 666,629.06

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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.