Home / 921,546.56-1,271,689.20-513,692.80

Finding the Fourth Proportional to 921,546.56, 1,271,689.20 and 513,692.80

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Solution

The fourth proportional to 921,546.56, 1,271,689.20 and 513,692.80 is: 708,870.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,546.56 : 1,271,689.20 = 513,692.80 : x
  2. Step 2: Convert to fraction form
    921,546.56/1,271,689.20 = 513,692.80/x
  3. Step 3: Cross multiply
    921,546.56x = 1,271,689.20 × 513,692.80
  4. Step 4: Simplify right side
    921,546.56x = 653,257,585,877.76
  5. Step 5: Solve for x
    x = 653,257,585,877.76/921,546.56
  6. Step 6: Final answer
    x = 708,870.95

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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.