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Finding the Fourth Proportional to 617,683.74, 852,412.26 and 355,894.38

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Solution

The fourth proportional to 617,683.74, 852,412.26 and 355,894.38 is: 491,139.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,683.74 : 852,412.26 = 355,894.38 : x
  2. Step 2: Convert to fraction form
    617,683.74/852,412.26 = 355,894.38/x
  3. Step 3: Cross multiply
    617,683.74x = 852,412.26 × 355,894.38
  4. Step 4: Simplify right side
    617,683.74x = 303,368,732,777.10
  5. Step 5: Solve for x
    x = 303,368,732,777.10/617,683.74
  6. Step 6: Final answer
    x = 491,139.26

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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.