Home / 1,207,814.82-1,666,789.86-663,985.59

Finding the Fourth Proportional to 1,207,814.82, 1,666,789.86 and 663,985.59

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Solution

The fourth proportional to 1,207,814.82, 1,666,789.86 and 663,985.59 is: 916,303.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,814.82 : 1,666,789.86 = 663,985.59 : x
  2. Step 2: Convert to fraction form
    1,207,814.82/1,666,789.86 = 663,985.59/x
  3. Step 3: Cross multiply
    1,207,814.82x = 1,666,789.86 × 663,985.59
  4. Step 4: Simplify right side
    1,207,814.82x = 1,106,724,448,598.12
  5. Step 5: Solve for x
    x = 1,106,724,448,598.12/1,207,814.82
  6. Step 6: Final answer
    x = 916,303.09

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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.