Home / 640,921.18-884,448.04-350,522.82

Finding the Fourth Proportional to 640,921.18, 884,448.04 and 350,522.82

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Solution

The fourth proportional to 640,921.18, 884,448.04 and 350,522.82 is: 483,708.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,921.18 : 884,448.04 = 350,522.82 : x
  2. Step 2: Convert to fraction form
    640,921.18/884,448.04 = 350,522.82/x
  3. Step 3: Cross multiply
    640,921.18x = 884,448.04 × 350,522.82
  4. Step 4: Simplify right side
    640,921.18x = 310,019,221,124.27
  5. Step 5: Solve for x
    x = 310,019,221,124.27/640,921.18
  6. Step 6: Final answer
    x = 483,708.81

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1.5x scale

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.