Home / 709,027-978,460.32-386,744.02

Finding the Fourth Proportional to 709,027, 978,460.32 and 386,744.02

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Solution

The fourth proportional to 709,027, 978,460.32 and 386,744.02 is: 533,708.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,027 : 978,460.32 = 386,744.02 : x
  2. Step 2: Convert to fraction form
    709,027/978,460.32 = 386,744.02/x
  3. Step 3: Cross multiply
    709,027x = 978,460.32 × 386,744.02
  4. Step 4: Simplify right side
    709,027x = 378,413,677,567.29
  5. Step 5: Solve for x
    x = 378,413,677,567.29/709,027
  6. Step 6: Final answer
    x = 533,708.42

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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.