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Finding the Fourth Proportional to 656,154.26, 905,492.89 and 354,348.26

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Solution

The fourth proportional to 656,154.26, 905,492.89 and 354,348.26 is: 489,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,154.26 : 905,492.89 = 354,348.26 : x
  2. Step 2: Convert to fraction form
    656,154.26/905,492.89 = 354,348.26/x
  3. Step 3: Cross multiply
    656,154.26x = 905,492.89 × 354,348.26
  4. Step 4: Simplify right side
    656,154.26x = 320,859,830,013.87
  5. Step 5: Solve for x
    x = 320,859,830,013.87/656,154.26
  6. Step 6: Final answer
    x = 489,000.60

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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.