Home / 1,320,071.72-1,821,700.14-716,459.72

Finding the Fourth Proportional to 1,320,071.72, 1,821,700.14 and 716,459.72

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Solution

The fourth proportional to 1,320,071.72, 1,821,700.14 and 716,459.72 is: 988,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,071.72 : 1,821,700.14 = 716,459.72 : x
  2. Step 2: Convert to fraction form
    1,320,071.72/1,821,700.14 = 716,459.72/x
  3. Step 3: Cross multiply
    1,320,071.72x = 1,821,700.14 × 716,459.72
  4. Step 4: Simplify right side
    1,320,071.72x = 1,305,174,772,228.36
  5. Step 5: Solve for x
    x = 1,305,174,772,228.36/1,320,071.72
  6. Step 6: Final answer
    x = 988,715.05

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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.