Home / 822,993.12-1,135,273.26-478,790.40

Finding the Fourth Proportional to 822,993.12, 1,135,273.26 and 478,790.40

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Solution

The fourth proportional to 822,993.12, 1,135,273.26 and 478,790.40 is: 660,464.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,993.12 : 1,135,273.26 = 478,790.40 : x
  2. Step 2: Convert to fraction form
    822,993.12/1,135,273.26 = 478,790.40/x
  3. Step 3: Cross multiply
    822,993.12x = 1,135,273.26 × 478,790.40
  4. Step 4: Simplify right side
    822,993.12x = 543,557,938,264.70
  5. Step 5: Solve for x
    x = 543,557,938,264.70/822,993.12
  6. Step 6: Final answer
    x = 660,464.74

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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.