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Finding the Fourth Proportional to 1,805,903, 2,492,129.40 and 990,152

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Solution

The fourth proportional to 1,805,903, 2,492,129.40 and 990,152 is: 1,366,400.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805,903 : 2,492,129.40 = 990,152 : x
  2. Step 2: Convert to fraction form
    1,805,903/2,492,129.40 = 990,152/x
  3. Step 3: Cross multiply
    1,805,903x = 2,492,129.40 × 990,152
  4. Step 4: Simplify right side
    1,805,903x = 2,467,586,909,668.80
  5. Step 5: Solve for x
    x = 2,467,586,909,668.80/1,805,903
  6. Step 6: Final answer
    x = 1,366,400.58

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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.