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Finding the Fourth Proportional to 709,100.24, 978,552.08 and 386,803.41

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Solution

The fourth proportional to 709,100.24, 978,552.08 and 386,803.41 is: 533,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,100.24 : 978,552.08 = 386,803.41 : x
  2. Step 2: Convert to fraction form
    709,100.24/978,552.08 = 386,803.41/x
  3. Step 3: Cross multiply
    709,100.24x = 978,552.08 × 386,803.41
  4. Step 4: Simplify right side
    709,100.24x = 378,507,281,406.59
  5. Step 5: Solve for x
    x = 378,507,281,406.59/709,100.24
  6. Step 6: Final answer
    x = 533,785.30

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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.