Home / 822,878.20-1,135,114.50-478,675.40

Finding the Fourth Proportional to 822,878.20, 1,135,114.50 and 478,675.40

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Solution

The fourth proportional to 822,878.20, 1,135,114.50 and 478,675.40 is: 660,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,878.20 : 1,135,114.50 = 478,675.40 : x
  2. Step 2: Convert to fraction form
    822,878.20/1,135,114.50 = 478,675.40/x
  3. Step 3: Cross multiply
    822,878.20x = 1,135,114.50 × 478,675.40
  4. Step 4: Simplify right side
    822,878.20x = 543,351,387,333.30
  5. Step 5: Solve for x
    x = 543,351,387,333.30/822,878.20
  6. Step 6: Final answer
    x = 660,305.97

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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.