Home / 856,836.60-1,284,026.10-630,430.20

Finding the Fourth Proportional to 856,836.60, 1,284,026.10 and 630,430.20

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Solution

The fourth proportional to 856,836.60, 1,284,026.10 and 630,430.20 is: 944,741.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,836.60 : 1,284,026.10 = 630,430.20 : x
  2. Step 2: Convert to fraction form
    856,836.60/1,284,026.10 = 630,430.20/x
  3. Step 3: Cross multiply
    856,836.60x = 1,284,026.10 × 630,430.20
  4. Step 4: Simplify right side
    856,836.60x = 809,488,831,028.22
  5. Step 5: Solve for x
    x = 809,488,831,028.22/856,836.60
  6. Step 6: Final answer
    x = 944,741.19

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Double scale
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Similar ratio
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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.