Home / 778,045,433.36-1,073,699,488.04-420,813,608.72

Finding the Fourth Proportional to 778,045,433.36, 1,073,699,488.04 and 420,813,608.72

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Solution

The fourth proportional to 778,045,433.36, 1,073,699,488.04 and 420,813,608.72 is: 580,721,043.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,045,433.36 : 1,073,699,488.04 = 420,813,608.72 : x
  2. Step 2: Convert to fraction form
    778,045,433.36/1,073,699,488.04 = 420,813,608.72/x
  3. Step 3: Cross multiply
    778,045,433.36x = 1,073,699,488.04 × 420,813,608.72
  4. Step 4: Simplify right side
    778,045,433.36x = 451,827,356,242,928,896
  5. Step 5: Solve for x
    x = 451,827,356,242,928,896/778,045,433.36
  6. Step 6: Final answer
    x = 580,721,043.87

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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.