Home / 1,391,772.57-1,920,644.83-779,930.16

Finding the Fourth Proportional to 1,391,772.57, 1,920,644.83 and 779,930.16

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Solution

The fourth proportional to 1,391,772.57, 1,920,644.83 and 779,930.16 is: 1,076,302.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,772.57 : 1,920,644.83 = 779,930.16 : x
  2. Step 2: Convert to fraction form
    1,391,772.57/1,920,644.83 = 779,930.16/x
  3. Step 3: Cross multiply
    1,391,772.57x = 1,920,644.83 × 779,930.16
  4. Step 4: Simplify right side
    1,391,772.57x = 1,497,968,829,565.07
  5. Step 5: Solve for x
    x = 1,497,968,829,565.07/1,391,772.57
  6. Step 6: Final answer
    x = 1,076,302.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.