Home / 692,696.40-1,039,044.60-640,856.40

Finding the Fourth Proportional to 692,696.40, 1,039,044.60 and 640,856.40

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Solution

The fourth proportional to 692,696.40, 1,039,044.60 and 640,856.40 is: 961,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,696.40 : 1,039,044.60 = 640,856.40 : x
  2. Step 2: Convert to fraction form
    692,696.40/1,039,044.60 = 640,856.40/x
  3. Step 3: Cross multiply
    692,696.40x = 1,039,044.60 × 640,856.40
  4. Step 4: Simplify right side
    692,696.40x = 665,878,381,795.44
  5. Step 5: Solve for x
    x = 665,878,381,795.44/692,696.40
  6. Step 6: Final answer
    x = 961,284.60

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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.