Home / 1,390,448.72-1,917,828-1,276,095.96

Finding the Fourth Proportional to 1,390,448.72, 1,917,828 and 1,276,095.96

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Solution

The fourth proportional to 1,390,448.72, 1,917,828 and 1,276,095.96 is: 1,760,102.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,448.72 : 1,917,828 = 1,276,095.96 : x
  2. Step 2: Convert to fraction form
    1,390,448.72/1,917,828 = 1,276,095.96/x
  3. Step 3: Cross multiply
    1,390,448.72x = 1,917,828 × 1,276,095.96
  4. Step 4: Simplify right side
    1,390,448.72x = 2,447,332,562,774.88
  5. Step 5: Solve for x
    x = 2,447,332,562,774.88/1,390,448.72
  6. Step 6: Final answer
    x = 1,760,102.71

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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.