Home / 1,289,705.82-1,779,241.95-805,430.22

Finding the Fourth Proportional to 1,289,705.82, 1,779,241.95 and 805,430.22

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Solution

The fourth proportional to 1,289,705.82, 1,779,241.95 and 805,430.22 is: 1,111,148.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,705.82 : 1,779,241.95 = 805,430.22 : x
  2. Step 2: Convert to fraction form
    1,289,705.82/1,779,241.95 = 805,430.22/x
  3. Step 3: Cross multiply
    1,289,705.82x = 1,779,241.95 × 805,430.22
  4. Step 4: Simplify right side
    1,289,705.82x = 1,433,055,235,221.73
  5. Step 5: Solve for x
    x = 1,433,055,235,221.73/1,289,705.82
  6. Step 6: Final answer
    x = 1,111,148.92

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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.