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Finding the Fourth Proportional to 822,776.72, 1,135,416.84 and 465,080.72

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Solution

The fourth proportional to 822,776.72, 1,135,416.84 and 465,080.72 is: 641,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,776.72 : 1,135,416.84 = 465,080.72 : x
  2. Step 2: Convert to fraction form
    822,776.72/1,135,416.84 = 465,080.72/x
  3. Step 3: Cross multiply
    822,776.72x = 1,135,416.84 × 465,080.72
  4. Step 4: Simplify right side
    822,776.72x = 528,060,481,447.33
  5. Step 5: Solve for x
    x = 528,060,481,447.33/822,776.72
  6. Step 6: Final answer
    x = 641,802.90

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1.5x scale

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.