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Finding the Fourth Proportional to 909,967.80, 1,364,951.70 and 768,250.20

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Solution

The fourth proportional to 909,967.80, 1,364,951.70 and 768,250.20 is: 1,152,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,967.80 : 1,364,951.70 = 768,250.20 : x
  2. Step 2: Convert to fraction form
    909,967.80/1,364,951.70 = 768,250.20/x
  3. Step 3: Cross multiply
    909,967.80x = 1,364,951.70 × 768,250.20
  4. Step 4: Simplify right side
    909,967.80x = 1,048,624,416,515.34
  5. Step 5: Solve for x
    x = 1,048,624,416,515.34/909,967.80
  6. Step 6: Final answer
    x = 1,152,375.30

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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.