Home / 2,128,840.80-3,193,261.20-1,918,888.80

Finding the Fourth Proportional to 2,128,840.80, 3,193,261.20 and 1,918,888.80

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Solution

The fourth proportional to 2,128,840.80, 3,193,261.20 and 1,918,888.80 is: 2,878,333.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,840.80 : 3,193,261.20 = 1,918,888.80 : x
  2. Step 2: Convert to fraction form
    2,128,840.80/3,193,261.20 = 1,918,888.80/x
  3. Step 3: Cross multiply
    2,128,840.80x = 3,193,261.20 × 1,918,888.80
  4. Step 4: Simplify right side
    2,128,840.80x = 6,127,513,152,154.56
  5. Step 5: Solve for x
    x = 6,127,513,152,154.56/2,128,840.80
  6. Step 6: Final answer
    x = 2,878,333.20

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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.