Home / 1,152,071.40-1,728,107.10-620,630.40

Finding the Fourth Proportional to 1,152,071.40, 1,728,107.10 and 620,630.40

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Solution

The fourth proportional to 1,152,071.40, 1,728,107.10 and 620,630.40 is: 930,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,071.40 : 1,728,107.10 = 620,630.40 : x
  2. Step 2: Convert to fraction form
    1,152,071.40/1,728,107.10 = 620,630.40/x
  3. Step 3: Cross multiply
    1,152,071.40x = 1,728,107.10 × 620,630.40
  4. Step 4: Simplify right side
    1,152,071.40x = 1,072,515,800,715.84
  5. Step 5: Solve for x
    x = 1,072,515,800,715.84/1,152,071.40
  6. Step 6: Final answer
    x = 930,945.60

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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.