Home / 1,900,021.60-2,851,645.20-778,895.20

Finding the Fourth Proportional to 1,900,021.60, 2,851,645.20 and 778,895.20

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Solution

The fourth proportional to 1,900,021.60, 2,851,645.20 and 778,895.20 is: 1,169,003.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,900,021.60 : 2,851,645.20 = 778,895.20 : x
  2. Step 2: Convert to fraction form
    1,900,021.60/2,851,645.20 = 778,895.20/x
  3. Step 3: Cross multiply
    1,900,021.60x = 2,851,645.20 × 778,895.20
  4. Step 4: Simplify right side
    1,900,021.60x = 2,221,132,758,383.04
  5. Step 5: Solve for x
    x = 2,221,132,758,383.04/1,900,021.60
  6. Step 6: Final answer
    x = 1,169,003.95

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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.