Home / 3,120,404.40-4,680,606.60-1,918,429.20

Finding the Fourth Proportional to 3,120,404.40, 4,680,606.60 and 1,918,429.20

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Solution

The fourth proportional to 3,120,404.40, 4,680,606.60 and 1,918,429.20 is: 2,877,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,404.40 : 4,680,606.60 = 1,918,429.20 : x
  2. Step 2: Convert to fraction form
    3,120,404.40/4,680,606.60 = 1,918,429.20/x
  3. Step 3: Cross multiply
    3,120,404.40x = 4,680,606.60 × 1,918,429.20
  4. Step 4: Simplify right side
    3,120,404.40x = 8,979,412,375,152.72
  5. Step 5: Solve for x
    x = 8,979,412,375,152.72/3,120,404.40
  6. Step 6: Final answer
    x = 2,877,643.80

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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.