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Finding the Fourth Proportional to 611,604.20, 917,406.30 and 587,109.80

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Solution

The fourth proportional to 611,604.20, 917,406.30 and 587,109.80 is: 880,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,604.20 : 917,406.30 = 587,109.80 : x
  2. Step 2: Convert to fraction form
    611,604.20/917,406.30 = 587,109.80/x
  3. Step 3: Cross multiply
    611,604.20x = 917,406.30 × 587,109.80
  4. Step 4: Simplify right side
    611,604.20x = 538,618,229,311.74
  5. Step 5: Solve for x
    x = 538,618,229,311.74/611,604.20
  6. Step 6: Final answer
    x = 880,664.70

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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.