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Finding the Fourth Proportional to 620,980.79, 856,827.74 and 362,807.83

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Solution

The fourth proportional to 620,980.79, 856,827.74 and 362,807.83 is: 500,601.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,980.79 : 856,827.74 = 362,807.83 : x
  2. Step 2: Convert to fraction form
    620,980.79/856,827.74 = 362,807.83/x
  3. Step 3: Cross multiply
    620,980.79x = 856,827.74 × 362,807.83
  4. Step 4: Simplify right side
    620,980.79x = 310,863,806,935.03
  5. Step 5: Solve for x
    x = 310,863,806,935.03/620,980.79
  6. Step 6: Final answer
    x = 500,601.33

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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.