Home / 961,848,928.20-1,327,354,093.62-521,815,780.20

Finding the Fourth Proportional to 961,848,928.20, 1,327,354,093.62 and 521,815,780.20

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Solution

The fourth proportional to 961,848,928.20, 1,327,354,093.62 and 521,815,780.20 is: 720,107,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,848,928.20 : 1,327,354,093.62 = 521,815,780.20 : x
  2. Step 2: Convert to fraction form
    961,848,928.20/1,327,354,093.62 = 521,815,780.20/x
  3. Step 3: Cross multiply
    961,848,928.20x = 1,327,354,093.62 × 521,815,780.20
  4. Step 4: Simplify right side
    961,848,928.20x = 692,634,311,963,984,128
  5. Step 5: Solve for x
    x = 692,634,311,963,984,128/961,848,928.20
  6. Step 6: Final answer
    x = 720,107,172.40

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Double scale
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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.