Home / 661,336.80-913,019.04-505,995.36

Finding the Fourth Proportional to 661,336.80, 913,019.04 and 505,995.36

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Solution

The fourth proportional to 661,336.80, 913,019.04 and 505,995.36 is: 698,559.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,336.80 : 913,019.04 = 505,995.36 : x
  2. Step 2: Convert to fraction form
    661,336.80/913,019.04 = 505,995.36/x
  3. Step 3: Cross multiply
    661,336.80x = 913,019.04 × 505,995.36
  4. Step 4: Simplify right side
    661,336.80x = 461,983,397,831.65
  5. Step 5: Solve for x
    x = 461,983,397,831.65/661,336.80
  6. Step 6: Final answer
    x = 698,559.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.