Home / 858,809.90-1,288,214.85-543,622.70

Finding the Fourth Proportional to 858,809.90, 1,288,214.85 and 543,622.70

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Solution

The fourth proportional to 858,809.90, 1,288,214.85 and 543,622.70 is: 815,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,809.90 : 1,288,214.85 = 543,622.70 : x
  2. Step 2: Convert to fraction form
    858,809.90/1,288,214.85 = 543,622.70/x
  3. Step 3: Cross multiply
    858,809.90x = 1,288,214.85 × 543,622.70
  4. Step 4: Simplify right side
    858,809.90x = 700,302,834,937.10
  5. Step 5: Solve for x
    x = 700,302,834,937.10/858,809.90
  6. Step 6: Final answer
    x = 815,434.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.