Home / 915,320.66-1,372,919.42-316,290.02

Finding the Fourth Proportional to 915,320.66, 1,372,919.42 and 316,290.02

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Solution

The fourth proportional to 915,320.66, 1,372,919.42 and 316,290.02 is: 474,413.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,320.66 : 1,372,919.42 = 316,290.02 : x
  2. Step 2: Convert to fraction form
    915,320.66/1,372,919.42 = 316,290.02/x
  3. Step 3: Cross multiply
    915,320.66x = 1,372,919.42 × 316,290.02
  4. Step 4: Simplify right side
    915,320.66x = 434,240,704,736.32
  5. Step 5: Solve for x
    x = 434,240,704,736.32/915,320.66
  6. Step 6: Final answer
    x = 474,413.75

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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.