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Finding the Fourth Proportional to 603,574.97, 906,130.71 and 391,231.44

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Solution

The fourth proportional to 603,574.97, 906,130.71 and 391,231.44 is: 587,345.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,574.97 : 906,130.71 = 391,231.44 : x
  2. Step 2: Convert to fraction form
    603,574.97/906,130.71 = 391,231.44/x
  3. Step 3: Cross multiply
    603,574.97x = 906,130.71 × 391,231.44
  4. Step 4: Simplify right side
    603,574.97x = 354,506,823,124.42
  5. Step 5: Solve for x
    x = 354,506,823,124.42/603,574.97
  6. Step 6: Final answer
    x = 587,345.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.