Home / 1,245,121.78-1,864,688.64-711,023.98

Finding the Fourth Proportional to 1,245,121.78, 1,864,688.64 and 711,023.98

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Solution

The fourth proportional to 1,245,121.78, 1,864,688.64 and 711,023.98 is: 1,064,826.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,121.78 : 1,864,688.64 = 711,023.98 : x
  2. Step 2: Convert to fraction form
    1,245,121.78/1,864,688.64 = 711,023.98/x
  3. Step 3: Cross multiply
    1,245,121.78x = 1,864,688.64 × 711,023.98
  4. Step 4: Simplify right side
    1,245,121.78x = 1,325,838,338,273.59
  5. Step 5: Solve for x
    x = 1,325,838,338,273.59/1,245,121.78
  6. Step 6: Final answer
    x = 1,064,826.24

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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.