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Finding the Fourth Proportional to 447,772.80, 670,492.80 and 426,777.60

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Solution

The fourth proportional to 447,772.80, 670,492.80 and 426,777.60 is: 639,054.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,772.80 : 670,492.80 = 426,777.60 : x
  2. Step 2: Convert to fraction form
    447,772.80/670,492.80 = 426,777.60/x
  3. Step 3: Cross multiply
    447,772.80x = 670,492.80 × 426,777.60
  4. Step 4: Simplify right side
    447,772.80x = 286,151,308,001.28
  5. Step 5: Solve for x
    x = 286,151,308,001.28/447,772.80
  6. Step 6: Final answer
    x = 639,054.69

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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.