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Finding the Fourth Proportional to 1,488,578.60, 2,086,809.40 and 1,488,578.60

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Solution

The fourth proportional to 1,488,578.60, 2,086,809.40 and 1,488,578.60 is: 2,086,809.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488,578.60 : 2,086,809.40 = 1,488,578.60 : x
  2. Step 2: Convert to fraction form
    1,488,578.60/2,086,809.40 = 1,488,578.60/x
  3. Step 3: Cross multiply
    1,488,578.60x = 2,086,809.40 × 1,488,578.60
  4. Step 4: Simplify right side
    1,488,578.60x = 3,106,379,815,118.84
  5. Step 5: Solve for x
    x = 3,106,379,815,118.84/1,488,578.60
  6. Step 6: Final answer
    x = 2,086,809.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.