Home / 1,125,985.91-1,553,971.69-642,623.37

Finding the Fourth Proportional to 1,125,985.91, 1,553,971.69 and 642,623.37

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Solution

The fourth proportional to 1,125,985.91, 1,553,971.69 and 642,623.37 is: 886,883.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,985.91 : 1,553,971.69 = 642,623.37 : x
  2. Step 2: Convert to fraction form
    1,125,985.91/1,553,971.69 = 642,623.37/x
  3. Step 3: Cross multiply
    1,125,985.91x = 1,553,971.69 × 642,623.37
  4. Step 4: Simplify right side
    1,125,985.91x = 998,618,521,099.28
  5. Step 5: Solve for x
    x = 998,618,521,099.28/1,125,985.91
  6. Step 6: Final answer
    x = 886,883.68

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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.