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Finding the Fourth Proportional to 899,697.90, 1,348,682.85 and 520,229.10

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Solution

The fourth proportional to 899,697.90, 1,348,682.85 and 520,229.10 is: 779,844.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,697.90 : 1,348,682.85 = 520,229.10 : x
  2. Step 2: Convert to fraction form
    899,697.90/1,348,682.85 = 520,229.10/x
  3. Step 3: Cross multiply
    899,697.90x = 1,348,682.85 × 520,229.10
  4. Step 4: Simplify right side
    899,697.90x = 701,624,065,240.94
  5. Step 5: Solve for x
    x = 701,624,065,240.94/899,697.90
  6. Step 6: Final answer
    x = 779,844.06

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Double scale
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Similar ratio
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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.