Home / 686,437.38-1,029,804.71-281,630.51

Finding the Fourth Proportional to 686,437.38, 1,029,804.71 and 281,630.51

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Solution

The fourth proportional to 686,437.38, 1,029,804.71 and 281,630.51 is: 422,506.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,437.38 : 1,029,804.71 = 281,630.51 : x
  2. Step 2: Convert to fraction form
    686,437.38/1,029,804.71 = 281,630.51/x
  3. Step 3: Cross multiply
    686,437.38x = 1,029,804.71 × 281,630.51
  4. Step 4: Simplify right side
    686,437.38x = 290,024,419,120.53
  5. Step 5: Solve for x
    x = 290,024,419,120.53/686,437.38
  6. Step 6: Final answer
    x = 422,506.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.