Home / 822,520.20-1,135,080.90-478,438.68

Finding the Fourth Proportional to 822,520.20, 1,135,080.90 and 478,438.68

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Solution

The fourth proportional to 822,520.20, 1,135,080.90 and 478,438.68 is: 660,247.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,520.20 : 1,135,080.90 = 478,438.68 : x
  2. Step 2: Convert to fraction form
    822,520.20/1,135,080.90 = 478,438.68/x
  3. Step 3: Cross multiply
    822,520.20x = 1,135,080.90 × 478,438.68
  4. Step 4: Simplify right side
    822,520.20x = 543,066,607,489.21
  5. Step 5: Solve for x
    x = 543,066,607,489.21/822,520.20
  6. Step 6: Final answer
    x = 660,247.14

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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.