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Finding the Fourth Proportional to 622,870.54, 859,561.12 and 336,390.68

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Solution

The fourth proportional to 622,870.54, 859,561.12 and 336,390.68 is: 464,219.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,870.54 : 859,561.12 = 336,390.68 : x
  2. Step 2: Convert to fraction form
    622,870.54/859,561.12 = 336,390.68/x
  3. Step 3: Cross multiply
    622,870.54x = 859,561.12 × 336,390.68
  4. Step 4: Simplify right side
    622,870.54x = 289,148,349,658.36
  5. Step 5: Solve for x
    x = 289,148,349,658.36/622,870.54
  6. Step 6: Final answer
    x = 464,219.02

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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.