Home / 645,623.64-968,427.60-290,386.80

Finding the Fourth Proportional to 645,623.64, 968,427.60 and 290,386.80

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Solution

The fourth proportional to 645,623.64, 968,427.60 and 290,386.80 is: 435,576.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,623.64 : 968,427.60 = 290,386.80 : x
  2. Step 2: Convert to fraction form
    645,623.64/968,427.60 = 290,386.80/x
  3. Step 3: Cross multiply
    645,623.64x = 968,427.60 × 290,386.80
  4. Step 4: Simplify right side
    645,623.64x = 281,218,591,795.68
  5. Step 5: Solve for x
    x = 281,218,591,795.68/645,623.64
  6. Step 6: Final answer
    x = 435,576.66

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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.