Home / 640,479.08-959,941.80-470,422.56

Finding the Fourth Proportional to 640,479.08, 959,941.80 and 470,422.56

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Solution

The fourth proportional to 640,479.08, 959,941.80 and 470,422.56 is: 705,063.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,479.08 : 959,941.80 = 470,422.56 : x
  2. Step 2: Convert to fraction form
    640,479.08/959,941.80 = 470,422.56/x
  3. Step 3: Cross multiply
    640,479.08x = 959,941.80 × 470,422.56
  4. Step 4: Simplify right side
    640,479.08x = 451,578,279,007.01
  5. Step 5: Solve for x
    x = 451,578,279,007.01/640,479.08
  6. Step 6: Final answer
    x = 705,063.28

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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.