Home / 912,986.40-1,369,479.60-439,557.60

Finding the Fourth Proportional to 912,986.40, 1,369,479.60 and 439,557.60

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Solution

The fourth proportional to 912,986.40, 1,369,479.60 and 439,557.60 is: 659,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,986.40 : 1,369,479.60 = 439,557.60 : x
  2. Step 2: Convert to fraction form
    912,986.40/1,369,479.60 = 439,557.60/x
  3. Step 3: Cross multiply
    912,986.40x = 1,369,479.60 × 439,557.60
  4. Step 4: Simplify right side
    912,986.40x = 601,965,166,224.96
  5. Step 5: Solve for x
    x = 601,965,166,224.96/912,986.40
  6. Step 6: Final answer
    x = 659,336.40

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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.