Home / 817,930.33-1,128,721.83-455,354.20

Finding the Fourth Proportional to 817,930.33, 1,128,721.83 and 455,354.20

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Solution

The fourth proportional to 817,930.33, 1,128,721.83 and 455,354.20 is: 628,376.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,930.33 : 1,128,721.83 = 455,354.20 : x
  2. Step 2: Convert to fraction form
    817,930.33/1,128,721.83 = 455,354.20/x
  3. Step 3: Cross multiply
    817,930.33x = 1,128,721.83 × 455,354.20
  4. Step 4: Simplify right side
    817,930.33x = 513,968,225,922.19
  5. Step 5: Solve for x
    x = 513,968,225,922.19/817,930.33
  6. Step 6: Final answer
    x = 628,376.53

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1.5x scale

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.