Home / 921,815.64-1,382,922.72-522,644.40

Finding the Fourth Proportional to 921,815.64, 1,382,922.72 and 522,644.40

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Solution

The fourth proportional to 921,815.64, 1,382,922.72 and 522,644.40 is: 784,079.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,815.64 : 1,382,922.72 = 522,644.40 : x
  2. Step 2: Convert to fraction form
    921,815.64/1,382,922.72 = 522,644.40/x
  3. Step 3: Cross multiply
    921,815.64x = 1,382,922.72 × 522,644.40
  4. Step 4: Simplify right side
    921,815.64x = 722,776,815,240.77
  5. Step 5: Solve for x
    x = 722,776,815,240.77/921,815.64
  6. Step 6: Final answer
    x = 784,079.58

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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.