Home / 1,296,639.10-1,789,345.83-715,866.94

Finding the Fourth Proportional to 1,296,639.10, 1,789,345.83 and 715,866.94

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Solution

The fourth proportional to 1,296,639.10, 1,789,345.83 and 715,866.94 is: 987,887.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,639.10 : 1,789,345.83 = 715,866.94 : x
  2. Step 2: Convert to fraction form
    1,296,639.10/1,789,345.83 = 715,866.94/x
  3. Step 3: Cross multiply
    1,296,639.10x = 1,789,345.83 × 715,866.94
  4. Step 4: Simplify right side
    1,296,639.10x = 1,280,933,523,923.86
  5. Step 5: Solve for x
    x = 1,280,933,523,923.86/1,296,639.10
  6. Step 6: Final answer
    x = 987,887.47

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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.