Home / 1,320,011.79-1,821,617.04-716,399.79

Finding the Fourth Proportional to 1,320,011.79, 1,821,617.04 and 716,399.79

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Solution

The fourth proportional to 1,320,011.79, 1,821,617.04 and 716,399.79 is: 988,632.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,011.79 : 1,821,617.04 = 716,399.79 : x
  2. Step 2: Convert to fraction form
    1,320,011.79/1,821,617.04 = 716,399.79/x
  3. Step 3: Cross multiply
    1,320,011.79x = 1,821,617.04 × 716,399.79
  4. Step 4: Simplify right side
    1,320,011.79x = 1,305,006,064,916.42
  5. Step 5: Solve for x
    x = 1,305,006,064,916.42/1,320,011.79
  6. Step 6: Final answer
    x = 988,632.13

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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.