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Finding the Fourth Proportional to 444,090.80, 666,136.20 and 425,428.40

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Solution

The fourth proportional to 444,090.80, 666,136.20 and 425,428.40 is: 638,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,090.80 : 666,136.20 = 425,428.40 : x
  2. Step 2: Convert to fraction form
    444,090.80/666,136.20 = 425,428.40/x
  3. Step 3: Cross multiply
    444,090.80x = 666,136.20 × 425,428.40
  4. Step 4: Simplify right side
    444,090.80x = 283,393,257,748.08
  5. Step 5: Solve for x
    x = 283,393,257,748.08/444,090.80
  6. Step 6: Final answer
    x = 638,142.60

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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.