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Finding the Fourth Proportional to 720,774.44, 994,503.38 and 430,329.40

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Solution

The fourth proportional to 720,774.44, 994,503.38 and 430,329.40 is: 593,755.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,774.44 : 994,503.38 = 430,329.40 : x
  2. Step 2: Convert to fraction form
    720,774.44/994,503.38 = 430,329.40/x
  3. Step 3: Cross multiply
    720,774.44x = 994,503.38 × 430,329.40
  4. Step 4: Simplify right side
    720,774.44x = 427,964,042,813.37
  5. Step 5: Solve for x
    x = 427,964,042,813.37/720,774.44
  6. Step 6: Final answer
    x = 593,755.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.