Home / 920,989.60-1,271,004.88-513,091.22

Finding the Fourth Proportional to 920,989.60, 1,271,004.88 and 513,091.22

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Solution

The fourth proportional to 920,989.60, 1,271,004.88 and 513,091.22 is: 708,087.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,989.60 : 1,271,004.88 = 513,091.22 : x
  2. Step 2: Convert to fraction form
    920,989.60/1,271,004.88 = 513,091.22/x
  3. Step 3: Cross multiply
    920,989.60x = 1,271,004.88 × 513,091.22
  4. Step 4: Simplify right side
    920,989.60x = 652,141,444,505.15
  5. Step 5: Solve for x
    x = 652,141,444,505.15/920,989.60
  6. Step 6: Final answer
    x = 708,087.74

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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.