Home / 1,287,878.40-1,932,163.20-1,148,601.60

Finding the Fourth Proportional to 1,287,878.40, 1,932,163.20 and 1,148,601.60

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Solution

The fourth proportional to 1,287,878.40, 1,932,163.20 and 1,148,601.60 is: 1,723,210.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,878.40 : 1,932,163.20 = 1,148,601.60 : x
  2. Step 2: Convert to fraction form
    1,287,878.40/1,932,163.20 = 1,148,601.60/x
  3. Step 3: Cross multiply
    1,287,878.40x = 1,932,163.20 × 1,148,601.60
  4. Step 4: Simplify right side
    1,287,878.40x = 2,219,285,742,981.12
  5. Step 5: Solve for x
    x = 2,219,285,742,981.12/1,287,878.40
  6. Step 6: Final answer
    x = 1,723,210.63

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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.