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Finding the Fourth Proportional to 604,345.80, 906,810.30 and 426,469.80

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Solution

The fourth proportional to 604,345.80, 906,810.30 and 426,469.80 is: 639,910.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,345.80 : 906,810.30 = 426,469.80 : x
  2. Step 2: Convert to fraction form
    604,345.80/906,810.30 = 426,469.80/x
  3. Step 3: Cross multiply
    604,345.80x = 906,810.30 × 426,469.80
  4. Step 4: Simplify right side
    604,345.80x = 386,727,207,278.94
  5. Step 5: Solve for x
    x = 386,727,207,278.94/604,345.80
  6. Step 6: Final answer
    x = 639,910.47

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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.