Home / 817,929.33-1,128,720.45-455,353.20

Finding the Fourth Proportional to 817,929.33, 1,128,720.45 and 455,353.20

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Solution

The fourth proportional to 817,929.33, 1,128,720.45 and 455,353.20 is: 628,375.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,929.33 : 1,128,720.45 = 455,353.20 : x
  2. Step 2: Convert to fraction form
    817,929.33/1,128,720.45 = 455,353.20/x
  3. Step 3: Cross multiply
    817,929.33x = 1,128,720.45 × 455,353.20
  4. Step 4: Simplify right side
    817,929.33x = 513,966,468,812.94
  5. Step 5: Solve for x
    x = 513,966,468,812.94/817,929.33
  6. Step 6: Final answer
    x = 628,375.15

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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.