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Finding the Fourth Proportional to 872,653.50, 1,308,656.25 and 303,888.60

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Solution

The fourth proportional to 872,653.50, 1,308,656.25 and 303,888.60 is: 455,720.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,653.50 : 1,308,656.25 = 303,888.60 : x
  2. Step 2: Convert to fraction form
    872,653.50/1,308,656.25 = 303,888.60/x
  3. Step 3: Cross multiply
    872,653.50x = 1,308,656.25 × 303,888.60
  4. Step 4: Simplify right side
    872,653.50x = 397,685,715,693.75
  5. Step 5: Solve for x
    x = 397,685,715,693.75/872,653.50
  6. Step 6: Final answer
    x = 455,720.07

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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.