Home / 921,555.73-1,271,592.73-513,568.45

Finding the Fourth Proportional to 921,555.73, 1,271,592.73 and 513,568.45

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Solution

The fourth proportional to 921,555.73, 1,271,592.73 and 513,568.45 is: 708,638.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,555.73 : 1,271,592.73 = 513,568.45 : x
  2. Step 2: Convert to fraction form
    921,555.73/1,271,592.73 = 513,568.45/x
  3. Step 3: Cross multiply
    921,555.73x = 1,271,592.73 × 513,568.45
  4. Step 4: Simplify right side
    921,555.73x = 653,049,906,720.00
  5. Step 5: Solve for x
    x = 653,049,906,720.00/921,555.73
  6. Step 6: Final answer
    x = 708,638.54

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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.