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Finding the Fourth Proportional to 709,246.01, 978,762.74 and 386,962.80

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Solution

The fourth proportional to 709,246.01, 978,762.74 and 386,962.80 is: 534,010.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,246.01 : 978,762.74 = 386,962.80 : x
  2. Step 2: Convert to fraction form
    709,246.01/978,762.74 = 386,962.80/x
  3. Step 3: Cross multiply
    709,246.01x = 978,762.74 × 386,962.80
  4. Step 4: Simplify right side
    709,246.01x = 378,744,768,471.26
  5. Step 5: Solve for x
    x = 378,744,768,471.26/709,246.01
  6. Step 6: Final answer
    x = 534,010.44

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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.