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Finding the Fourth Proportional to 1,488,786.03, 2,053,865.84 and 915,487.47

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Solution

The fourth proportional to 1,488,786.03, 2,053,865.84 and 915,487.47 is: 1,262,967.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488,786.03 : 2,053,865.84 = 915,487.47 : x
  2. Step 2: Convert to fraction form
    1,488,786.03/2,053,865.84 = 915,487.47/x
  3. Step 3: Cross multiply
    1,488,786.03x = 2,053,865.84 × 915,487.47
  4. Step 4: Simplify right side
    1,488,786.03x = 1,880,288,437,003.59
  5. Step 5: Solve for x
    x = 1,880,288,437,003.59/1,488,786.03
  6. Step 6: Final answer
    x = 1,262,967.54

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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.