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Finding the Fourth Proportional to 1,369,883.03, 1,890,639.12 and 788,994.48

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Solution

The fourth proportional to 1,369,883.03, 1,890,639.12 and 788,994.48 is: 1,088,927.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,883.03 : 1,890,639.12 = 788,994.48 : x
  2. Step 2: Convert to fraction form
    1,369,883.03/1,890,639.12 = 788,994.48/x
  3. Step 3: Cross multiply
    1,369,883.03x = 1,890,639.12 × 788,994.48
  4. Step 4: Simplify right side
    1,369,883.03x = 1,491,703,829,352.06
  5. Step 5: Solve for x
    x = 1,491,703,829,352.06/1,369,883.03
  6. Step 6: Final answer
    x = 1,088,927.89

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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.