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Finding the Fourth Proportional to 872,559.81, 1,308,830.00 and 340,454.61

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Solution

The fourth proportional to 872,559.81, 1,308,830.00 and 340,454.61 is: 510,678.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,559.81 : 1,308,830.00 = 340,454.61 : x
  2. Step 2: Convert to fraction form
    872,559.81/1,308,830.00 = 340,454.61/x
  3. Step 3: Cross multiply
    872,559.81x = 1,308,830.00 × 340,454.61
  4. Step 4: Simplify right side
    872,559.81x = 445,597,205,504.03
  5. Step 5: Solve for x
    x = 445,597,205,504.03/872,559.81
  6. Step 6: Final answer
    x = 510,678.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.