Home / 1,219,837.20-1,683,970.20-812,180.40

Finding the Fourth Proportional to 1,219,837.20, 1,683,970.20 and 812,180.40

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Solution

The fourth proportional to 1,219,837.20, 1,683,970.20 and 812,180.40 is: 1,121,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,837.20 : 1,683,970.20 = 812,180.40 : x
  2. Step 2: Convert to fraction form
    1,219,837.20/1,683,970.20 = 812,180.40/x
  3. Step 3: Cross multiply
    1,219,837.20x = 1,683,970.20 × 812,180.40
  4. Step 4: Simplify right side
    1,219,837.20x = 1,367,687,590,624.08
  5. Step 5: Solve for x
    x = 1,367,687,590,624.08/1,219,837.20
  6. Step 6: Final answer
    x = 1,121,205.02

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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.