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Finding the Fourth Proportional to 615,954.70, 923,413.65 and 320,466.70

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Solution

The fourth proportional to 615,954.70, 923,413.65 and 320,466.70 is: 480,430.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,954.70 : 923,413.65 = 320,466.70 : x
  2. Step 2: Convert to fraction form
    615,954.70/923,413.65 = 320,466.70/x
  3. Step 3: Cross multiply
    615,954.70x = 923,413.65 × 320,466.70
  4. Step 4: Simplify right side
    615,954.70x = 295,923,325,150.46
  5. Step 5: Solve for x
    x = 295,923,325,150.46/615,954.70
  6. Step 6: Final answer
    x = 480,430.34

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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.