Home / 1,611,128.40-2,418,559.80-864,632.40

Finding the Fourth Proportional to 1,611,128.40, 2,418,559.80 and 864,632.40

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Solution

The fourth proportional to 1,611,128.40, 2,418,559.80 and 864,632.40 is: 1,297,950.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611,128.40 : 2,418,559.80 = 864,632.40 : x
  2. Step 2: Convert to fraction form
    1,611,128.40/2,418,559.80 = 864,632.40/x
  3. Step 3: Cross multiply
    1,611,128.40x = 2,418,559.80 × 864,632.40
  4. Step 4: Simplify right side
    1,611,128.40x = 2,091,165,164,417.52
  5. Step 5: Solve for x
    x = 2,091,165,164,417.52/1,611,128.40
  6. Step 6: Final answer
    x = 1,297,950.66

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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.