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Finding the Fourth Proportional to 447,797.80, 670,530.30 and 426,802.60

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Solution

The fourth proportional to 447,797.80, 670,530.30 and 426,802.60 is: 639,092.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,797.80 : 670,530.30 = 426,802.60 : x
  2. Step 2: Convert to fraction form
    447,797.80/670,530.30 = 426,802.60/x
  3. Step 3: Cross multiply
    447,797.80x = 670,530.30 × 426,802.60
  4. Step 4: Simplify right side
    447,797.80x = 286,184,075,418.78
  5. Step 5: Solve for x
    x = 286,184,075,418.78/447,797.80
  6. Step 6: Final answer
    x = 639,092.19

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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.