Home / 815,667.88-1,223,579.58-317,070.76

Finding the Fourth Proportional to 815,667.88, 1,223,579.58 and 317,070.76

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Solution

The fourth proportional to 815,667.88, 1,223,579.58 and 317,070.76 is: 475,636.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,667.88 : 1,223,579.58 = 317,070.76 : x
  2. Step 2: Convert to fraction form
    815,667.88/1,223,579.58 = 317,070.76/x
  3. Step 3: Cross multiply
    815,667.88x = 1,223,579.58 × 317,070.76
  4. Step 4: Simplify right side
    815,667.88x = 387,961,307,351.08
  5. Step 5: Solve for x
    x = 387,961,307,351.08/815,667.88
  6. Step 6: Final answer
    x = 475,636.37

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1.5x scale

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.