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Finding the Fourth Proportional to 628,698.58, 867,623.61 and 342,237.76

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Solution

The fourth proportional to 628,698.58, 867,623.61 and 342,237.76 is: 472,298.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,698.58 : 867,623.61 = 342,237.76 : x
  2. Step 2: Convert to fraction form
    628,698.58/867,623.61 = 342,237.76/x
  3. Step 3: Cross multiply
    628,698.58x = 867,623.61 × 342,237.76
  4. Step 4: Simplify right side
    628,698.58x = 296,933,560,809.51
  5. Step 5: Solve for x
    x = 296,933,560,809.51/628,698.58
  6. Step 6: Final answer
    x = 472,298.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.