Home / 817,644.63-1,128,386.76-455,091.72

Finding the Fourth Proportional to 817,644.63, 1,128,386.76 and 455,091.72

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Solution

The fourth proportional to 817,644.63, 1,128,386.76 and 455,091.72 is: 628,047.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,644.63 : 1,128,386.76 = 455,091.72 : x
  2. Step 2: Convert to fraction form
    817,644.63/1,128,386.76 = 455,091.72/x
  3. Step 3: Cross multiply
    817,644.63x = 1,128,386.76 × 455,091.72
  4. Step 4: Simplify right side
    817,644.63x = 513,519,471,433.63
  5. Step 5: Solve for x
    x = 513,519,471,433.63/817,644.63
  6. Step 6: Final answer
    x = 628,047.26

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Double scale
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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.