Home / 921,515.54-1,271,646.42-513,661.82

Finding the Fourth Proportional to 921,515.54, 1,271,646.42 and 513,661.82

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Solution

The fourth proportional to 921,515.54, 1,271,646.42 and 513,661.82 is: 708,828.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,515.54 : 1,271,646.42 = 513,661.82 : x
  2. Step 2: Convert to fraction form
    921,515.54/1,271,646.42 = 513,661.82/x
  3. Step 3: Cross multiply
    921,515.54x = 1,271,646.42 × 513,661.82
  4. Step 4: Simplify right side
    921,515.54x = 653,196,214,493.68
  5. Step 5: Solve for x
    x = 653,196,214,493.68/921,515.54
  6. Step 6: Final answer
    x = 708,828.21

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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.