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Finding the Fourth Proportional to 605,979.60, 908,386.20 and 470,968.80

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Solution

The fourth proportional to 605,979.60, 908,386.20 and 470,968.80 is: 705,999.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,979.60 : 908,386.20 = 470,968.80 : x
  2. Step 2: Convert to fraction form
    605,979.60/908,386.20 = 470,968.80/x
  3. Step 3: Cross multiply
    605,979.60x = 908,386.20 × 470,968.80
  4. Step 4: Simplify right side
    605,979.60x = 427,821,558,550.56
  5. Step 5: Solve for x
    x = 427,821,558,550.56/605,979.60
  6. Step 6: Final answer
    x = 705,999.94

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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.