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Finding the Fourth Proportional to 709,036.03, 978,483.04 and 386,757.64

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Solution

The fourth proportional to 709,036.03, 978,483.04 and 386,757.64 is: 533,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,036.03 : 978,483.04 = 386,757.64 : x
  2. Step 2: Convert to fraction form
    709,036.03/978,483.04 = 386,757.64/x
  3. Step 3: Cross multiply
    709,036.03x = 978,483.04 × 386,757.64
  4. Step 4: Simplify right side
    709,036.03x = 378,435,786,082.67
  5. Step 5: Solve for x
    x = 378,435,786,082.67/709,036.03
  6. Step 6: Final answer
    x = 533,732.80

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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.