Home / 660,845.20-990,576.60-360,864.40

Finding the Fourth Proportional to 660,845.20, 990,576.60 and 360,864.40

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Solution

The fourth proportional to 660,845.20, 990,576.60 and 360,864.40 is: 540,919.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,845.20 : 990,576.60 = 360,864.40 : x
  2. Step 2: Convert to fraction form
    660,845.20/990,576.60 = 360,864.40/x
  3. Step 3: Cross multiply
    660,845.20x = 990,576.60 × 360,864.40
  4. Step 4: Simplify right side
    660,845.20x = 357,463,830,413.04
  5. Step 5: Solve for x
    x = 357,463,830,413.04/660,845.20
  6. Step 6: Final answer
    x = 540,919.16

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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.