Home / 809,211.60-1,213,817.40-557,269.20

Finding the Fourth Proportional to 809,211.60, 1,213,817.40 and 557,269.20

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Solution

The fourth proportional to 809,211.60, 1,213,817.40 and 557,269.20 is: 835,903.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,211.60 : 1,213,817.40 = 557,269.20 : x
  2. Step 2: Convert to fraction form
    809,211.60/1,213,817.40 = 557,269.20/x
  3. Step 3: Cross multiply
    809,211.60x = 1,213,817.40 × 557,269.20
  4. Step 4: Simplify right side
    809,211.60x = 676,423,051,444.08
  5. Step 5: Solve for x
    x = 676,423,051,444.08/809,211.60
  6. Step 6: Final answer
    x = 835,903.80

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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.