Home / 921,180.74-1,381,935.16-313,935.38

Finding the Fourth Proportional to 921,180.74, 1,381,935.16 and 313,935.38

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Solution

The fourth proportional to 921,180.74, 1,381,935.16 and 313,935.38 is: 470,958.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,180.74 : 1,381,935.16 = 313,935.38 : x
  2. Step 2: Convert to fraction form
    921,180.74/1,381,935.16 = 313,935.38/x
  3. Step 3: Cross multiply
    921,180.74x = 1,381,935.16 × 313,935.38
  4. Step 4: Simplify right side
    921,180.74x = 433,838,346,028.35
  5. Step 5: Solve for x
    x = 433,838,346,028.35/921,180.74
  6. Step 6: Final answer
    x = 470,958.98

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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.