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Finding the Fourth Proportional to 620,897.76, 856,846.62 and 375,879.27

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Solution

The fourth proportional to 620,897.76, 856,846.62 and 375,879.27 is: 518,718.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,897.76 : 856,846.62 = 375,879.27 : x
  2. Step 2: Convert to fraction form
    620,897.76/856,846.62 = 375,879.27/x
  3. Step 3: Cross multiply
    620,897.76x = 856,846.62 × 375,879.27
  4. Step 4: Simplify right side
    620,897.76x = 322,070,882,027.57
  5. Step 5: Solve for x
    x = 322,070,882,027.57/620,897.76
  6. Step 6: Final answer
    x = 518,718.06

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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.