Home / 819,269.82-1,130,129.28-512,814.21

Finding the Fourth Proportional to 819,269.82, 1,130,129.28 and 512,814.21

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Solution

The fourth proportional to 819,269.82, 1,130,129.28 and 512,814.21 is: 707,393.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,269.82 : 1,130,129.28 = 512,814.21 : x
  2. Step 2: Convert to fraction form
    819,269.82/1,130,129.28 = 512,814.21/x
  3. Step 3: Cross multiply
    819,269.82x = 1,130,129.28 × 512,814.21
  4. Step 4: Simplify right side
    819,269.82x = 579,546,353,921.07
  5. Step 5: Solve for x
    x = 579,546,353,921.07/819,269.82
  6. Step 6: Final answer
    x = 707,393.76

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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.