Home / 812,069.34-1,120,657.83-449,518.20

Finding the Fourth Proportional to 812,069.34, 1,120,657.83 and 449,518.20

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Solution

The fourth proportional to 812,069.34, 1,120,657.83 and 449,518.20 is: 620,336.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,069.34 : 1,120,657.83 = 449,518.20 : x
  2. Step 2: Convert to fraction form
    812,069.34/1,120,657.83 = 449,518.20/x
  3. Step 3: Cross multiply
    812,069.34x = 1,120,657.83 × 449,518.20
  4. Step 4: Simplify right side
    812,069.34x = 503,756,090,557.51
  5. Step 5: Solve for x
    x = 503,756,090,557.51/812,069.34
  6. Step 6: Final answer
    x = 620,336.30

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Double scale
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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.