Home / 808,426.80-1,213,638.60-508,906.80

Finding the Fourth Proportional to 808,426.80, 1,213,638.60 and 508,906.80

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Solution

The fourth proportional to 808,426.80, 1,213,638.60 and 508,906.80 is: 763,988.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,426.80 : 1,213,638.60 = 508,906.80 : x
  2. Step 2: Convert to fraction form
    808,426.80/1,213,638.60 = 508,906.80/x
  3. Step 3: Cross multiply
    808,426.80x = 1,213,638.60 × 508,906.80
  4. Step 4: Simplify right side
    808,426.80x = 617,628,936,282.48
  5. Step 5: Solve for x
    x = 617,628,936,282.48/808,426.80
  6. Step 6: Final answer
    x = 763,988.70

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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.