Home / 691,257.90-1,036,886.85-407,822.70

Finding the Fourth Proportional to 691,257.90, 1,036,886.85 and 407,822.70

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Solution

The fourth proportional to 691,257.90, 1,036,886.85 and 407,822.70 is: 611,734.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,257.90 : 1,036,886.85 = 407,822.70 : x
  2. Step 2: Convert to fraction form
    691,257.90/1,036,886.85 = 407,822.70/x
  3. Step 3: Cross multiply
    691,257.90x = 1,036,886.85 × 407,822.70
  4. Step 4: Simplify right side
    691,257.90x = 422,865,994,761.50
  5. Step 5: Solve for x
    x = 422,865,994,761.50/691,257.90
  6. Step 6: Final answer
    x = 611,734.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.