Home / 811,830.56-1,120,298.60-449,269.70

Finding the Fourth Proportional to 811,830.56, 1,120,298.60 and 449,269.70

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Solution

The fourth proportional to 811,830.56, 1,120,298.60 and 449,269.70 is: 619,976.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,830.56 : 1,120,298.60 = 449,269.70 : x
  2. Step 2: Convert to fraction form
    811,830.56/1,120,298.60 = 449,269.70/x
  3. Step 3: Cross multiply
    811,830.56x = 1,120,298.60 × 449,269.70
  4. Step 4: Simplify right side
    811,830.56x = 503,316,211,454.10
  5. Step 5: Solve for x
    x = 503,316,211,454.10/811,830.56
  6. Step 6: Final answer
    x = 619,976.93

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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.