Home / 1,078,383.78-1,617,616.98-279,644.40

Finding the Fourth Proportional to 1,078,383.78, 1,617,616.98 and 279,644.40

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Solution

The fourth proportional to 1,078,383.78, 1,617,616.98 and 279,644.40 is: 419,477.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,383.78 : 1,617,616.98 = 279,644.40 : x
  2. Step 2: Convert to fraction form
    1,078,383.78/1,617,616.98 = 279,644.40/x
  3. Step 3: Cross multiply
    1,078,383.78x = 1,617,616.98 × 279,644.40
  4. Step 4: Simplify right side
    1,078,383.78x = 452,357,529,801.91
  5. Step 5: Solve for x
    x = 452,357,529,801.91/1,078,383.78
  6. Step 6: Final answer
    x = 419,477.31

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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.