Home / 828,919.40-1,243,328.34-487,551.60

Finding the Fourth Proportional to 828,919.40, 1,243,328.34 and 487,551.60

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Solution

The fourth proportional to 828,919.40, 1,243,328.34 and 487,551.60 is: 731,297.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,919.40 : 1,243,328.34 = 487,551.60 : x
  2. Step 2: Convert to fraction form
    828,919.40/1,243,328.34 = 487,551.60/x
  3. Step 3: Cross multiply
    828,919.40x = 1,243,328.34 × 487,551.60
  4. Step 4: Simplify right side
    828,919.40x = 606,186,721,492.34
  5. Step 5: Solve for x
    x = 606,186,721,492.34/828,919.40
  6. Step 6: Final answer
    x = 731,297.54

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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.