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Finding the Fourth Proportional to 909,950.80, 1,364,926.20 and 768,233.20

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Solution

The fourth proportional to 909,950.80, 1,364,926.20 and 768,233.20 is: 1,152,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,950.80 : 1,364,926.20 = 768,233.20 : x
  2. Step 2: Convert to fraction form
    909,950.80/1,364,926.20 = 768,233.20/x
  3. Step 3: Cross multiply
    909,950.80x = 1,364,926.20 × 768,233.20
  4. Step 4: Simplify right side
    909,950.80x = 1,048,581,622,389.84
  5. Step 5: Solve for x
    x = 1,048,581,622,389.84/909,950.80
  6. Step 6: Final answer
    x = 1,152,349.80

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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.