Home / 1,213,499.40-1,820,905.20-539,684.70

Finding the Fourth Proportional to 1,213,499.40, 1,820,905.20 and 539,684.70

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Solution

The fourth proportional to 1,213,499.40, 1,820,905.20 and 539,684.70 is: 809,818.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,499.40 : 1,820,905.20 = 539,684.70 : x
  2. Step 2: Convert to fraction form
    1,213,499.40/1,820,905.20 = 539,684.70/x
  3. Step 3: Cross multiply
    1,213,499.40x = 1,820,905.20 × 539,684.70
  4. Step 4: Simplify right side
    1,213,499.40x = 982,714,676,590.44
  5. Step 5: Solve for x
    x = 982,714,676,590.44/1,213,499.40
  6. Step 6: Final answer
    x = 809,818.84

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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.