Home / 818,793.60-1,228,190.40-286,259.10

Finding the Fourth Proportional to 818,793.60, 1,228,190.40 and 286,259.10

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Solution

The fourth proportional to 818,793.60, 1,228,190.40 and 286,259.10 is: 429,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,793.60 : 1,228,190.40 = 286,259.10 : x
  2. Step 2: Convert to fraction form
    818,793.60/1,228,190.40 = 286,259.10/x
  3. Step 3: Cross multiply
    818,793.60x = 1,228,190.40 × 286,259.10
  4. Step 4: Simplify right side
    818,793.60x = 351,580,678,532.64
  5. Step 5: Solve for x
    x = 351,580,678,532.64/818,793.60
  6. Step 6: Final answer
    x = 429,388.65

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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.