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Finding the Fourth Proportional to 689,905,359.80, 1,034,858,039.70 and 689,905,359.80

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Solution

The fourth proportional to 689,905,359.80, 1,034,858,039.70 and 689,905,359.80 is: 1,034,858,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,905,359.80 : 1,034,858,039.70 = 689,905,359.80 : x
  2. Step 2: Convert to fraction form
    689,905,359.80/1,034,858,039.70 = 689,905,359.80/x
  3. Step 3: Cross multiply
    689,905,359.80x = 1,034,858,039.70 × 689,905,359.80
  4. Step 4: Simplify right side
    689,905,359.80x = 713,954,108,221,151,104
  5. Step 5: Solve for x
    x = 713,954,108,221,151,104/689,905,359.80
  6. Step 6: Final answer
    x = 1,034,858,039.70

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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.