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Finding the Fourth Proportional to 989,794.80, 1,484,692.20 and 901,221.30

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Solution

The fourth proportional to 989,794.80, 1,484,692.20 and 901,221.30 is: 1,351,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,794.80 : 1,484,692.20 = 901,221.30 : x
  2. Step 2: Convert to fraction form
    989,794.80/1,484,692.20 = 901,221.30/x
  3. Step 3: Cross multiply
    989,794.80x = 1,484,692.20 × 901,221.30
  4. Step 4: Simplify right side
    989,794.80x = 1,338,036,234,583.86
  5. Step 5: Solve for x
    x = 1,338,036,234,583.86/989,794.80
  6. Step 6: Final answer
    x = 1,351,831.95

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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.