Home / 1,289,348.82-1,779,301.75-716,389

Finding the Fourth Proportional to 1,289,348.82, 1,779,301.75 and 716,389

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Solution

The fourth proportional to 1,289,348.82, 1,779,301.75 and 716,389 is: 988,617.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,348.82 : 1,779,301.75 = 716,389 : x
  2. Step 2: Convert to fraction form
    1,289,348.82/1,779,301.75 = 716,389/x
  3. Step 3: Cross multiply
    1,289,348.82x = 1,779,301.75 × 716,389
  4. Step 4: Simplify right side
    1,289,348.82x = 1,274,672,201,380.75
  5. Step 5: Solve for x
    x = 1,274,672,201,380.75/1,289,348.82
  6. Step 6: Final answer
    x = 988,617.03

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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.