Home / 817,760.10-1,128,483.82-455,174.64

Finding the Fourth Proportional to 817,760.10, 1,128,483.82 and 455,174.64

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Solution

The fourth proportional to 817,760.10, 1,128,483.82 and 455,174.64 is: 628,127.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,760.10 : 1,128,483.82 = 455,174.64 : x
  2. Step 2: Convert to fraction form
    817,760.10/1,128,483.82 = 455,174.64/x
  3. Step 3: Cross multiply
    817,760.10x = 1,128,483.82 × 455,174.64
  4. Step 4: Simplify right side
    817,760.10x = 513,657,216,514.33
  5. Step 5: Solve for x
    x = 513,657,216,514.33/817,760.10
  6. Step 6: Final answer
    x = 628,127.02

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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.