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Finding the Fourth Proportional to 626,796.84, 865,691.82 and 422,495.40

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Solution

The fourth proportional to 626,796.84, 865,691.82 and 422,495.40 is: 583,523.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,796.84 : 865,691.82 = 422,495.40 : x
  2. Step 2: Convert to fraction form
    626,796.84/865,691.82 = 422,495.40/x
  3. Step 3: Cross multiply
    626,796.84x = 865,691.82 × 422,495.40
  4. Step 4: Simplify right side
    626,796.84x = 365,750,811,767.63
  5. Step 5: Solve for x
    x = 365,750,811,767.63/626,796.84
  6. Step 6: Final answer
    x = 583,523.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.