Home / 819,270.88-1,130,130.76-512,815.28

Finding the Fourth Proportional to 819,270.88, 1,130,130.76 and 512,815.28

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Solution

The fourth proportional to 819,270.88, 1,130,130.76 and 512,815.28 is: 707,395.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,270.88 : 1,130,130.76 = 512,815.28 : x
  2. Step 2: Convert to fraction form
    819,270.88/1,130,130.76 = 512,815.28/x
  3. Step 3: Cross multiply
    819,270.88x = 1,130,130.76 × 512,815.28
  4. Step 4: Simplify right side
    819,270.88x = 579,548,313,911.28
  5. Step 5: Solve for x
    x = 579,548,313,911.28/819,270.88
  6. Step 6: Final answer
    x = 707,395.24

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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.