Home / 905,559.60-1,358,339.40-485,655.60

Finding the Fourth Proportional to 905,559.60, 1,358,339.40 and 485,655.60

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Solution

The fourth proportional to 905,559.60, 1,358,339.40 and 485,655.60 is: 728,483.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,559.60 : 1,358,339.40 = 485,655.60 : x
  2. Step 2: Convert to fraction form
    905,559.60/1,358,339.40 = 485,655.60/x
  3. Step 3: Cross multiply
    905,559.60x = 1,358,339.40 × 485,655.60
  4. Step 4: Simplify right side
    905,559.60x = 659,685,136,310.64
  5. Step 5: Solve for x
    x = 659,685,136,310.64/905,559.60
  6. Step 6: Final answer
    x = 728,483.40

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Double scale
Find fourth proportional to 905,560.60, 1,358,340.90 and 485,656.60
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.