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Finding the Fourth Proportional to 709,204.59, 978,697.69 and 403,281.02

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Solution

The fourth proportional to 709,204.59, 978,697.69 and 403,281.02 is: 556,525.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,204.59 : 978,697.69 = 403,281.02 : x
  2. Step 2: Convert to fraction form
    709,204.59/978,697.69 = 403,281.02/x
  3. Step 3: Cross multiply
    709,204.59x = 978,697.69 × 403,281.02
  4. Step 4: Simplify right side
    709,204.59x = 394,690,204,133.39
  5. Step 5: Solve for x
    x = 394,690,204,133.39/709,204.59
  6. Step 6: Final answer
    x = 556,525.17

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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.