Home / 1,207,821.61-1,666,799.19-663,992.35

Finding the Fourth Proportional to 1,207,821.61, 1,666,799.19 and 663,992.35

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Solution

The fourth proportional to 1,207,821.61, 1,666,799.19 and 663,992.35 is: 916,312.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,821.61 : 1,666,799.19 = 663,992.35 : x
  2. Step 2: Convert to fraction form
    1,207,821.61/1,666,799.19 = 663,992.35/x
  3. Step 3: Cross multiply
    1,207,821.61x = 1,666,799.19 × 663,992.35
  4. Step 4: Simplify right side
    1,207,821.61x = 1,106,741,911,146.20
  5. Step 5: Solve for x
    x = 1,106,741,911,146.20/1,207,821.61
  6. Step 6: Final answer
    x = 916,312.39

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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.