Home / 777,947,612.62-1,073,570,939.93-420,715,389.26

Finding the Fourth Proportional to 777,947,612.62, 1,073,570,939.93 and 420,715,389.26

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Solution

The fourth proportional to 777,947,612.62, 1,073,570,939.93 and 420,715,389.26 is: 580,588,986.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,947,612.62 : 1,073,570,939.93 = 420,715,389.26 : x
  2. Step 2: Convert to fraction form
    777,947,612.62/1,073,570,939.93 = 420,715,389.26/x
  3. Step 3: Cross multiply
    777,947,612.62x = 1,073,570,939.93 × 420,715,389.26
  4. Step 4: Simplify right side
    777,947,612.62x = 451,667,815,883,402,560
  5. Step 5: Solve for x
    x = 451,667,815,883,402,560/777,947,612.62
  6. Step 6: Final answer
    x = 580,588,986.40

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1.5x scale

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.