Home / 822,760.07-1,135,350.29-478,650.20

Finding the Fourth Proportional to 822,760.07, 1,135,350.29 and 478,650.20

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Solution

The fourth proportional to 822,760.07, 1,135,350.29 and 478,650.20 is: 660,503.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,760.07 : 1,135,350.29 = 478,650.20 : x
  2. Step 2: Convert to fraction form
    822,760.07/1,135,350.29 = 478,650.20/x
  3. Step 3: Cross multiply
    822,760.07x = 1,135,350.29 × 478,650.20
  4. Step 4: Simplify right side
    822,760.07x = 543,435,640,985.31
  5. Step 5: Solve for x
    x = 543,435,640,985.31/822,760.07
  6. Step 6: Final answer
    x = 660,503.18

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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.