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Finding the Fourth Proportional to 620,792.02, 856,698.65 and 375,782.41

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Solution

The fourth proportional to 620,792.02, 856,698.65 and 375,782.41 is: 518,583.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,792.02 : 856,698.65 = 375,782.41 : x
  2. Step 2: Convert to fraction form
    620,792.02/856,698.65 = 375,782.41/x
  3. Step 3: Cross multiply
    620,792.02x = 856,698.65 × 375,782.41
  4. Step 4: Simplify right side
    620,792.02x = 321,932,285,030.25
  5. Step 5: Solve for x
    x = 321,932,285,030.25/620,792.02
  6. Step 6: Final answer
    x = 518,583.15

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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.