Home / 1,395,687-1,925,129.52-1,007,856.57

Finding the Fourth Proportional to 1,395,687, 1,925,129.52 and 1,007,856.57

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Solution

The fourth proportional to 1,395,687, 1,925,129.52 and 1,007,856.57 is: 1,390,178.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,687 : 1,925,129.52 = 1,007,856.57 : x
  2. Step 2: Convert to fraction form
    1,395,687/1,925,129.52 = 1,007,856.57/x
  3. Step 3: Cross multiply
    1,395,687x = 1,925,129.52 × 1,007,856.57
  4. Step 4: Simplify right side
    1,395,687x = 1,940,254,434,832.95
  5. Step 5: Solve for x
    x = 1,940,254,434,832.95/1,395,687
  6. Step 6: Final answer
    x = 1,390,178.77

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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.