Home / 818,015.49-1,227,222.18-278,307.63

Finding the Fourth Proportional to 818,015.49, 1,227,222.18 and 278,307.63

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Solution

The fourth proportional to 818,015.49, 1,227,222.18 and 278,307.63 is: 417,529.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,015.49 : 1,227,222.18 = 278,307.63 : x
  2. Step 2: Convert to fraction form
    818,015.49/1,227,222.18 = 278,307.63/x
  3. Step 3: Cross multiply
    818,015.49x = 1,227,222.18 × 278,307.63
  4. Step 4: Simplify right side
    818,015.49x = 341,545,296,399.23
  5. Step 5: Solve for x
    x = 341,545,296,399.23/818,015.49
  6. Step 6: Final answer
    x = 417,529.13

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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.