Home / 778,045,430.36-1,073,699,483.90-420,813,605.72

Finding the Fourth Proportional to 778,045,430.36, 1,073,699,483.90 and 420,813,605.72

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Solution

The fourth proportional to 778,045,430.36, 1,073,699,483.90 and 420,813,605.72 is: 580,721,039.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,045,430.36 : 1,073,699,483.90 = 420,813,605.72 : x
  2. Step 2: Convert to fraction form
    778,045,430.36/1,073,699,483.90 = 420,813,605.72/x
  3. Step 3: Cross multiply
    778,045,430.36x = 1,073,699,483.90 × 420,813,605.72
  4. Step 4: Simplify right side
    778,045,430.36x = 451,827,351,279,662,080
  5. Step 5: Solve for x
    x = 451,827,351,279,662,080/778,045,430.36
  6. Step 6: Final answer
    x = 580,721,039.73

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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.