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Finding the Fourth Proportional to 770,768.80, 1,156,095.60 and 321,373.60

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Solution

The fourth proportional to 770,768.80, 1,156,095.60 and 321,373.60 is: 482,036.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,768.80 : 1,156,095.60 = 321,373.60 : x
  2. Step 2: Convert to fraction form
    770,768.80/1,156,095.60 = 321,373.60/x
  3. Step 3: Cross multiply
    770,768.80x = 1,156,095.60 × 321,373.60
  4. Step 4: Simplify right side
    770,768.80x = 371,538,604,916.16
  5. Step 5: Solve for x
    x = 371,538,604,916.16/770,768.80
  6. Step 6: Final answer
    x = 482,036.38

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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.