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Finding the Fourth Proportional to 620,393.52, 856,143.24 and 348,461.84

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Solution

The fourth proportional to 620,393.52, 856,143.24 and 348,461.84 is: 480,877.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,393.52 : 856,143.24 = 348,461.84 : x
  2. Step 2: Convert to fraction form
    620,393.52/856,143.24 = 348,461.84/x
  3. Step 3: Cross multiply
    620,393.52x = 856,143.24 × 348,461.84
  4. Step 4: Simplify right side
    620,393.52x = 298,333,248,713.96
  5. Step 5: Solve for x
    x = 298,333,248,713.96/620,393.52
  6. Step 6: Final answer
    x = 480,877.44

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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.