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Finding the Fourth Proportional to 1,262,845.32, 1,742,698.02 and 689,888.04

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Solution

The fourth proportional to 1,262,845.32, 1,742,698.02 and 689,888.04 is: 952,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,845.32 : 1,742,698.02 = 689,888.04 : x
  2. Step 2: Convert to fraction form
    1,262,845.32/1,742,698.02 = 689,888.04/x
  3. Step 3: Cross multiply
    1,262,845.32x = 1,742,698.02 × 689,888.04
  4. Step 4: Simplify right side
    1,262,845.32x = 1,202,266,521,329.68
  5. Step 5: Solve for x
    x = 1,202,266,521,329.68/1,262,845.32
  6. Step 6: Final answer
    x = 952,029.91

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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.