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Finding the Fourth Proportional to 905,481,505.80, 1,358,222,258.70 and 724,082,977.80

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Solution

The fourth proportional to 905,481,505.80, 1,358,222,258.70 and 724,082,977.80 is: 1,086,124,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,481,505.80 : 1,358,222,258.70 = 724,082,977.80 : x
  2. Step 2: Convert to fraction form
    905,481,505.80/1,358,222,258.70 = 724,082,977.80/x
  3. Step 3: Cross multiply
    905,481,505.80x = 1,358,222,258.70 × 724,082,977.80
  4. Step 4: Simplify right side
    905,481,505.80x = 983,465,617,593,737,984
  5. Step 5: Solve for x
    x = 983,465,617,593,737,984/905,481,505.80
  6. Step 6: Final answer
    x = 1,086,124,466.70

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1.5x scale

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.