Home / 1,262,343.32-1,742,047.64-689,400.36

Finding the Fourth Proportional to 1,262,343.32, 1,742,047.64 and 689,400.36

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Solution

The fourth proportional to 1,262,343.32, 1,742,047.64 and 689,400.36 is: 951,380.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,343.32 : 1,742,047.64 = 689,400.36 : x
  2. Step 2: Convert to fraction form
    1,262,343.32/1,742,047.64 = 689,400.36/x
  3. Step 3: Cross multiply
    1,262,343.32x = 1,742,047.64 × 689,400.36
  4. Step 4: Simplify right side
    1,262,343.32x = 1,200,968,270,153.15
  5. Step 5: Solve for x
    x = 1,200,968,270,153.15/1,262,343.32
  6. Step 6: Final answer
    x = 951,380.07

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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.