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Finding the Fourth Proportional to 1,338,981.83, 1,848,360.51 and 903,988.34

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Solution

The fourth proportional to 1,338,981.83, 1,848,360.51 and 903,988.34 is: 1,247,885.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,981.83 : 1,848,360.51 = 903,988.34 : x
  2. Step 2: Convert to fraction form
    1,338,981.83/1,848,360.51 = 903,988.34/x
  3. Step 3: Cross multiply
    1,338,981.83x = 1,848,360.51 × 903,988.34
  4. Step 4: Simplify right side
    1,338,981.83x = 1,670,896,339,914.65
  5. Step 5: Solve for x
    x = 1,670,896,339,914.65/1,338,981.83
  6. Step 6: Final answer
    x = 1,247,885.75

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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.