Home / 828,130.21-1,142,790.18-460,605.40

Finding the Fourth Proportional to 828,130.21, 1,142,790.18 and 460,605.40

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Solution

The fourth proportional to 828,130.21, 1,142,790.18 and 460,605.40 is: 635,619.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,130.21 : 1,142,790.18 = 460,605.40 : x
  2. Step 2: Convert to fraction form
    828,130.21/1,142,790.18 = 460,605.40/x
  3. Step 3: Cross multiply
    828,130.21x = 1,142,790.18 × 460,605.40
  4. Step 4: Simplify right side
    828,130.21x = 526,375,327,974.97
  5. Step 5: Solve for x
    x = 526,375,327,974.97/828,130.21
  6. Step 6: Final answer
    x = 635,619.04

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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.