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Finding the Fourth Proportional to 1,404,786.71, 1,938,605.67 and 760,206.87

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Solution

The fourth proportional to 1,404,786.71, 1,938,605.67 and 760,206.87 is: 1,049,085.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404,786.71 : 1,938,605.67 = 760,206.87 : x
  2. Step 2: Convert to fraction form
    1,404,786.71/1,938,605.67 = 760,206.87/x
  3. Step 3: Cross multiply
    1,404,786.71x = 1,938,605.67 × 760,206.87
  4. Step 4: Simplify right side
    1,404,786.71x = 1,473,741,348,554.95
  5. Step 5: Solve for x
    x = 1,473,741,348,554.95/1,404,786.71
  6. Step 6: Final answer
    x = 1,049,085.48

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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.