Home / 1,210,157,574-1,815,764,355.76-423,775,638.40

Finding the Fourth Proportional to 1,210,157,574, 1,815,764,355.76 and 423,775,638.40

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Solution

The fourth proportional to 1,210,157,574, 1,815,764,355.76 and 423,775,638.40 is: 635,848,351.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,157,574 : 1,815,764,355.76 = 423,775,638.40 : x
  2. Step 2: Convert to fraction form
    1,210,157,574/1,815,764,355.76 = 423,775,638.40/x
  3. Step 3: Cross multiply
    1,210,157,574x = 1,815,764,355.76 × 423,775,638.40
  4. Step 4: Simplify right side
    1,210,157,574x = 769,476,699,046,158,720
  5. Step 5: Solve for x
    x = 769,476,699,046,158,720/1,210,157,574
  6. Step 6: Final answer
    x = 635,848,351.97

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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.