Home / 688,205.23-949,340.66-639,494.06

Finding the Fourth Proportional to 688,205.23, 949,340.66 and 639,494.06

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Solution

The fourth proportional to 688,205.23, 949,340.66 and 639,494.06 is: 882,146.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,205.23 : 949,340.66 = 639,494.06 : x
  2. Step 2: Convert to fraction form
    688,205.23/949,340.66 = 639,494.06/x
  3. Step 3: Cross multiply
    688,205.23x = 949,340.66 × 639,494.06
  4. Step 4: Simplify right side
    688,205.23x = 607,097,705,042.31
  5. Step 5: Solve for x
    x = 607,097,705,042.31/688,205.23
  6. Step 6: Final answer
    x = 882,146.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.