Home / 1,356,876.72-1,872,271.68-783,992.88

Finding the Fourth Proportional to 1,356,876.72, 1,872,271.68 and 783,992.88

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Solution

The fourth proportional to 1,356,876.72, 1,872,271.68 and 783,992.88 is: 1,081,784.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356,876.72 : 1,872,271.68 = 783,992.88 : x
  2. Step 2: Convert to fraction form
    1,356,876.72/1,872,271.68 = 783,992.88/x
  3. Step 3: Cross multiply
    1,356,876.72x = 1,872,271.68 × 783,992.88
  4. Step 4: Simplify right side
    1,356,876.72x = 1,467,847,666,545.64
  5. Step 5: Solve for x
    x = 1,467,847,666,545.64/1,356,876.72
  6. Step 6: Final answer
    x = 1,081,784.10

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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.