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Finding the Fourth Proportional to 1,369,884.03, 1,890,640.50 and 788,995.48

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Solution

The fourth proportional to 1,369,884.03, 1,890,640.50 and 788,995.48 is: 1,088,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,884.03 : 1,890,640.50 = 788,995.48 : x
  2. Step 2: Convert to fraction form
    1,369,884.03/1,890,640.50 = 788,995.48/x
  3. Step 3: Cross multiply
    1,369,884.03x = 1,890,640.50 × 788,995.48
  4. Step 4: Simplify right side
    1,369,884.03x = 1,491,706,808,804.94
  5. Step 5: Solve for x
    x = 1,491,706,808,804.94/1,369,884.03
  6. Step 6: Final answer
    x = 1,088,929.26

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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.