Home / 2,319,420.78-3,200,976-1,287,124.02

Finding the Fourth Proportional to 2,319,420.78, 3,200,976 and 1,287,124.02

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Solution

The fourth proportional to 2,319,420.78, 3,200,976 and 1,287,124.02 is: 1,776,328.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319,420.78 : 3,200,976 = 1,287,124.02 : x
  2. Step 2: Convert to fraction form
    2,319,420.78/3,200,976 = 1,287,124.02/x
  3. Step 3: Cross multiply
    2,319,420.78x = 3,200,976 × 1,287,124.02
  4. Step 4: Simplify right side
    2,319,420.78x = 4,120,053,097,043.52
  5. Step 5: Solve for x
    x = 4,120,053,097,043.52/2,319,420.78
  6. Step 6: Final answer
    x = 1,776,328.44

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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.