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Finding the Fourth Proportional to 658,620, 908,911.44 and 403,823.52

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Solution

The fourth proportional to 658,620, 908,911.44 and 403,823.52 is: 557,286.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,620 : 908,911.44 = 403,823.52 : x
  2. Step 2: Convert to fraction form
    658,620/908,911.44 = 403,823.52/x
  3. Step 3: Cross multiply
    658,620x = 908,911.44 × 403,823.52
  4. Step 4: Simplify right side
    658,620x = 367,039,817,069.07
  5. Step 5: Solve for x
    x = 367,039,817,069.07/658,620
  6. Step 6: Final answer
    x = 557,286.17

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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.