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Finding the Fourth Proportional to 604,428.80, 906,643.20 and 363,891.20

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Solution

The fourth proportional to 604,428.80, 906,643.20 and 363,891.20 is: 545,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,428.80 : 906,643.20 = 363,891.20 : x
  2. Step 2: Convert to fraction form
    604,428.80/906,643.20 = 363,891.20/x
  3. Step 3: Cross multiply
    604,428.80x = 906,643.20 × 363,891.20
  4. Step 4: Simplify right side
    604,428.80x = 329,919,482,019.84
  5. Step 5: Solve for x
    x = 329,919,482,019.84/604,428.80
  6. Step 6: Final answer
    x = 545,836.80

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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.