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Finding the Fourth Proportional to 972,608.40, 1,455,413.40 and 657,680.40

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Solution

The fourth proportional to 972,608.40, 1,455,413.40 and 657,680.40 is: 984,154.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,608.40 : 1,455,413.40 = 657,680.40 : x
  2. Step 2: Convert to fraction form
    972,608.40/1,455,413.40 = 657,680.40/x
  3. Step 3: Cross multiply
    972,608.40x = 1,455,413.40 × 657,680.40
  4. Step 4: Simplify right side
    972,608.40x = 957,196,867,077.36
  5. Step 5: Solve for x
    x = 957,196,867,077.36/972,608.40
  6. Step 6: Final answer
    x = 984,154.43

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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.