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Finding the Fourth Proportional to 620,777.60, 856,609.26 and 348,802.28

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Solution

The fourth proportional to 620,777.60, 856,609.26 and 348,802.28 is: 481,311.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,777.60 : 856,609.26 = 348,802.28 : x
  2. Step 2: Convert to fraction form
    620,777.60/856,609.26 = 348,802.28/x
  3. Step 3: Cross multiply
    620,777.60x = 856,609.26 × 348,802.28
  4. Step 4: Simplify right side
    620,777.60x = 298,787,262,957.11
  5. Step 5: Solve for x
    x = 298,787,262,957.11/620,777.60
  6. Step 6: Final answer
    x = 481,311.28

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1.5x scale

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.