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Finding the Fourth Proportional to 607,226.20, 910,839.30 and 538,991.80

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Solution

The fourth proportional to 607,226.20, 910,839.30 and 538,991.80 is: 808,487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,226.20 : 910,839.30 = 538,991.80 : x
  2. Step 2: Convert to fraction form
    607,226.20/910,839.30 = 538,991.80/x
  3. Step 3: Cross multiply
    607,226.20x = 910,839.30 × 538,991.80
  4. Step 4: Simplify right side
    607,226.20x = 490,934,913,817.74
  5. Step 5: Solve for x
    x = 490,934,913,817.74/607,226.20
  6. Step 6: Final answer
    x = 808,487.70

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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.