Home / 640,477.07-959,938.80-470,420.56

Finding the Fourth Proportional to 640,477.07, 959,938.80 and 470,420.56

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Solution

The fourth proportional to 640,477.07, 959,938.80 and 470,420.56 is: 705,060.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,477.07 : 959,938.80 = 470,420.56 : x
  2. Step 2: Convert to fraction form
    640,477.07/959,938.80 = 470,420.56/x
  3. Step 3: Cross multiply
    640,477.07x = 959,938.80 × 470,420.56
  4. Step 4: Simplify right side
    640,477.07x = 451,574,947,297.57
  5. Step 5: Solve for x
    x = 451,574,947,297.57/640,477.07
  6. Step 6: Final answer
    x = 705,060.28

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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.