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Finding the Fourth Proportional to 859,847.76, 1,289,774.64 and 260,814.06

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Solution

The fourth proportional to 859,847.76, 1,289,774.64 and 260,814.06 is: 391,222.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,847.76 : 1,289,774.64 = 260,814.06 : x
  2. Step 2: Convert to fraction form
    859,847.76/1,289,774.64 = 260,814.06/x
  3. Step 3: Cross multiply
    859,847.76x = 1,289,774.64 × 260,814.06
  4. Step 4: Simplify right side
    859,847.76x = 336,391,360,343.44
  5. Step 5: Solve for x
    x = 336,391,360,343.44/859,847.76
  6. Step 6: Final answer
    x = 391,222.00

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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.