Home / 810,675.84-1,216,075.86-278,192.64

Finding the Fourth Proportional to 810,675.84, 1,216,075.86 and 278,192.64

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Solution

The fourth proportional to 810,675.84, 1,216,075.86 and 278,192.64 is: 417,310.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,675.84 : 1,216,075.86 = 278,192.64 : x
  2. Step 2: Convert to fraction form
    810,675.84/1,216,075.86 = 278,192.64/x
  3. Step 3: Cross multiply
    810,675.84x = 1,216,075.86 × 278,192.64
  4. Step 4: Simplify right side
    810,675.84x = 338,303,353,933.67
  5. Step 5: Solve for x
    x = 338,303,353,933.67/810,675.84
  6. Step 6: Final answer
    x = 417,310.27

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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.