Home / 1,378,407.78-2,067,612.39-525,280.50

Finding the Fourth Proportional to 1,378,407.78, 2,067,612.39 and 525,280.50

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Solution

The fourth proportional to 1,378,407.78, 2,067,612.39 and 525,280.50 is: 787,921.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,407.78 : 2,067,612.39 = 525,280.50 : x
  2. Step 2: Convert to fraction form
    1,378,407.78/2,067,612.39 = 525,280.50/x
  3. Step 3: Cross multiply
    1,378,407.78x = 2,067,612.39 × 525,280.50
  4. Step 4: Simplify right side
    1,378,407.78x = 1,086,076,470,025.39
  5. Step 5: Solve for x
    x = 1,086,076,470,025.39/1,378,407.78
  6. Step 6: Final answer
    x = 787,921.02

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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.