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Finding the Fourth Proportional to 533,876,428.80, 800,814,643.20 and 419,214,643.20

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Solution

The fourth proportional to 533,876,428.80, 800,814,643.20 and 419,214,643.20 is: 628,821,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,876,428.80 : 800,814,643.20 = 419,214,643.20 : x
  2. Step 2: Convert to fraction form
    533,876,428.80/800,814,643.20 = 419,214,643.20/x
  3. Step 3: Cross multiply
    533,876,428.80x = 800,814,643.20 × 419,214,643.20
  4. Step 4: Simplify right side
    533,876,428.80x = 335,713,224,918,423,296
  5. Step 5: Solve for x
    x = 335,713,224,918,423,296/533,876,428.80
  6. Step 6: Final answer
    x = 628,821,964.80

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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.