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Finding the Fourth Proportional to 429,491.60, 644,237.40 and 404,997.20

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Solution

The fourth proportional to 429,491.60, 644,237.40 and 404,997.20 is: 607,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,491.60 : 644,237.40 = 404,997.20 : x
  2. Step 2: Convert to fraction form
    429,491.60/644,237.40 = 404,997.20/x
  3. Step 3: Cross multiply
    429,491.60x = 644,237.40 × 404,997.20
  4. Step 4: Simplify right side
    429,491.60x = 260,914,343,135.28
  5. Step 5: Solve for x
    x = 260,914,343,135.28/429,491.60
  6. Step 6: Final answer
    x = 607,495.80

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1.5x scale

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.