Home / 1,686,309.60-2,530,630.80-1,213,334.40

Finding the Fourth Proportional to 1,686,309.60, 2,530,630.80 and 1,213,334.40

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Solution

The fourth proportional to 1,686,309.60, 2,530,630.80 and 1,213,334.40 is: 1,820,840.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,309.60 : 2,530,630.80 = 1,213,334.40 : x
  2. Step 2: Convert to fraction form
    1,686,309.60/2,530,630.80 = 1,213,334.40/x
  3. Step 3: Cross multiply
    1,686,309.60x = 2,530,630.80 × 1,213,334.40
  4. Step 4: Simplify right side
    1,686,309.60x = 3,070,501,403,339.52
  5. Step 5: Solve for x
    x = 3,070,501,403,339.52/1,686,309.60
  6. Step 6: Final answer
    x = 1,820,840.85

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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.