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Finding the Fourth Proportional to 885,994.80, 1,329,186.60 and 436,930.80

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Solution

The fourth proportional to 885,994.80, 1,329,186.60 and 436,930.80 is: 655,492.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,994.80 : 1,329,186.60 = 436,930.80 : x
  2. Step 2: Convert to fraction form
    885,994.80/1,329,186.60 = 436,930.80/x
  3. Step 3: Cross multiply
    885,994.80x = 1,329,186.60 × 436,930.80
  4. Step 4: Simplify right side
    885,994.80x = 580,762,564,487.28
  5. Step 5: Solve for x
    x = 580,762,564,487.28/885,994.80
  6. Step 6: Final answer
    x = 655,492.07

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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.