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Finding the Fourth Proportional to 972,316.80, 1,455,850.80 and 762,364.80

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Solution

The fourth proportional to 972,316.80, 1,455,850.80 and 762,364.80 is: 1,141,489.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,316.80 : 1,455,850.80 = 762,364.80 : x
  2. Step 2: Convert to fraction form
    972,316.80/1,455,850.80 = 762,364.80/x
  3. Step 3: Cross multiply
    972,316.80x = 1,455,850.80 × 762,364.80
  4. Step 4: Simplify right side
    972,316.80x = 1,109,889,403,971.84
  5. Step 5: Solve for x
    x = 1,109,889,403,971.84/972,316.80
  6. Step 6: Final answer
    x = 1,141,489.49

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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.