Home / 1,213,898.20-1,820,847.30-315,266.20

Finding the Fourth Proportional to 1,213,898.20, 1,820,847.30 and 315,266.20

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Solution

The fourth proportional to 1,213,898.20, 1,820,847.30 and 315,266.20 is: 472,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,898.20 : 1,820,847.30 = 315,266.20 : x
  2. Step 2: Convert to fraction form
    1,213,898.20/1,820,847.30 = 315,266.20/x
  3. Step 3: Cross multiply
    1,213,898.20x = 1,820,847.30 × 315,266.20
  4. Step 4: Simplify right side
    1,213,898.20x = 574,051,609,051.26
  5. Step 5: Solve for x
    x = 574,051,609,051.26/1,213,898.20
  6. Step 6: Final answer
    x = 472,899.30

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Double scale
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Similar ratio
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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.