Home / 658,811.25-988,216.88-209,533.05

Finding the Fourth Proportional to 658,811.25, 988,216.88 and 209,533.05

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Solution

The fourth proportional to 658,811.25, 988,216.88 and 209,533.05 is: 314,299.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,811.25 : 988,216.88 = 209,533.05 : x
  2. Step 2: Convert to fraction form
    658,811.25/988,216.88 = 209,533.05/x
  3. Step 3: Cross multiply
    658,811.25x = 988,216.88 × 209,533.05
  4. Step 4: Simplify right side
    658,811.25x = 207,064,095,880.22
  5. Step 5: Solve for x
    x = 207,064,095,880.22/658,811.25
  6. Step 6: Final answer
    x = 314,299.58

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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.