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Finding the Fourth Proportional to 604,013.80, 906,312.30 and 426,137.80

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Solution

The fourth proportional to 604,013.80, 906,312.30 and 426,137.80 is: 639,412.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,013.80 : 906,312.30 = 426,137.80 : x
  2. Step 2: Convert to fraction form
    604,013.80/906,312.30 = 426,137.80/x
  3. Step 3: Cross multiply
    604,013.80x = 906,312.30 × 426,137.80
  4. Step 4: Simplify right side
    604,013.80x = 386,213,929,634.94
  5. Step 5: Solve for x
    x = 386,213,929,634.94/604,013.80
  6. Step 6: Final answer
    x = 639,412.43

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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.