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Finding the Fourth Proportional to 709,117.94, 978,740.55 and 450,942.56

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Solution

The fourth proportional to 709,117.94, 978,740.55 and 450,942.56 is: 622,401.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,117.94 : 978,740.55 = 450,942.56 : x
  2. Step 2: Convert to fraction form
    709,117.94/978,740.55 = 450,942.56/x
  3. Step 3: Cross multiply
    709,117.94x = 978,740.55 × 450,942.56
  4. Step 4: Simplify right side
    709,117.94x = 441,355,769,192.81
  5. Step 5: Solve for x
    x = 441,355,769,192.81/709,117.94
  6. Step 6: Final answer
    x = 622,401.08

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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.