Home / 3,178,833.86-4,386,813.55-1,728,518.90

Finding the Fourth Proportional to 3,178,833.86, 4,386,813.55 and 1,728,518.90

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Solution

The fourth proportional to 3,178,833.86, 4,386,813.55 and 1,728,518.90 is: 2,385,368.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,833.86 : 4,386,813.55 = 1,728,518.90 : x
  2. Step 2: Convert to fraction form
    3,178,833.86/4,386,813.55 = 1,728,518.90/x
  3. Step 3: Cross multiply
    3,178,833.86x = 4,386,813.55 × 1,728,518.90
  4. Step 4: Simplify right side
    3,178,833.86x = 7,582,690,105,695.73
  5. Step 5: Solve for x
    x = 7,582,690,105,695.73/3,178,833.86
  6. Step 6: Final answer
    x = 2,385,368.49

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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.