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Finding the Fourth Proportional to 658,578.42, 908,880.21 and 403,894.98

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Solution

The fourth proportional to 658,578.42, 908,880.21 and 403,894.98 is: 557,400.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,578.42 : 908,880.21 = 403,894.98 : x
  2. Step 2: Convert to fraction form
    658,578.42/908,880.21 = 403,894.98/x
  3. Step 3: Cross multiply
    658,578.42x = 908,880.21 × 403,894.98
  4. Step 4: Simplify right side
    658,578.42x = 367,092,154,240.35
  5. Step 5: Solve for x
    x = 367,092,154,240.35/658,578.42
  6. Step 6: Final answer
    x = 557,400.82

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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.