Home / 686,437.29-1,028,036.16-348,640.25

Finding the Fourth Proportional to 686,437.29, 1,028,036.16 and 348,640.25

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Solution

The fourth proportional to 686,437.29, 1,028,036.16 and 348,640.25 is: 522,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,437.29 : 1,028,036.16 = 348,640.25 : x
  2. Step 2: Convert to fraction form
    686,437.29/1,028,036.16 = 348,640.25/x
  3. Step 3: Cross multiply
    686,437.29x = 1,028,036.16 × 348,640.25
  4. Step 4: Simplify right side
    686,437.29x = 358,414,778,691.26
  5. Step 5: Solve for x
    x = 358,414,778,691.26/686,437.29
  6. Step 6: Final answer
    x = 522,137.69

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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.