Home / 705,013,399.07-972,899,141.84-391,739,558.39

Finding the Fourth Proportional to 705,013,399.07, 972,899,141.84 and 391,739,558.39

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Solution

The fourth proportional to 705,013,399.07, 972,899,141.84 and 391,739,558.39 is: 540,589,839.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,013,399.07 : 972,899,141.84 = 391,739,558.39 : x
  2. Step 2: Convert to fraction form
    705,013,399.07/972,899,141.84 = 391,739,558.39/x
  3. Step 3: Cross multiply
    705,013,399.07x = 972,899,141.84 × 391,739,558.39
  4. Step 4: Simplify right side
    705,013,399.07x = 381,123,080,187,285,888
  5. Step 5: Solve for x
    x = 381,123,080,187,285,888/705,013,399.07
  6. Step 6: Final answer
    x = 540,589,839.41

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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.