Home / 1,207,828.35-1,666,808.55-663,999.21

Finding the Fourth Proportional to 1,207,828.35, 1,666,808.55 and 663,999.21

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Solution

The fourth proportional to 1,207,828.35, 1,666,808.55 and 663,999.21 is: 916,321.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,828.35 : 1,666,808.55 = 663,999.21 : x
  2. Step 2: Convert to fraction form
    1,207,828.35/1,666,808.55 = 663,999.21/x
  3. Step 3: Cross multiply
    1,207,828.35x = 1,666,808.55 × 663,999.21
  4. Step 4: Simplify right side
    1,207,828.35x = 1,106,759,560,421.25
  5. Step 5: Solve for x
    x = 1,106,759,560,421.25/1,207,828.35
  6. Step 6: Final answer
    x = 916,321.89

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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.