Home / 817,977.41-1,128,853.54-455,393.31

Finding the Fourth Proportional to 817,977.41, 1,128,853.54 and 455,393.31

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Solution

The fourth proportional to 817,977.41, 1,128,853.54 and 455,393.31 is: 628,467.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,977.41 : 1,128,853.54 = 455,393.31 : x
  2. Step 2: Convert to fraction form
    817,977.41/1,128,853.54 = 455,393.31/x
  3. Step 3: Cross multiply
    817,977.41x = 1,128,853.54 × 455,393.31
  4. Step 4: Simplify right side
    817,977.41x = 514,072,354,665.77
  5. Step 5: Solve for x
    x = 514,072,354,665.77/817,977.41
  6. Step 6: Final answer
    x = 628,467.67

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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.