Home / 769,824,007.20-1,154,736,010.80-425,450,239.20

Finding the Fourth Proportional to 769,824,007.20, 1,154,736,010.80 and 425,450,239.20

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Solution

The fourth proportional to 769,824,007.20, 1,154,736,010.80 and 425,450,239.20 is: 638,175,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,824,007.20 : 1,154,736,010.80 = 425,450,239.20 : x
  2. Step 2: Convert to fraction form
    769,824,007.20/1,154,736,010.80 = 425,450,239.20/x
  3. Step 3: Cross multiply
    769,824,007.20x = 1,154,736,010.80 × 425,450,239.20
  4. Step 4: Simplify right side
    769,824,007.20x = 491,282,712,007,713,728
  5. Step 5: Solve for x
    x = 491,282,712,007,713,728/769,824,007.20
  6. Step 6: Final answer
    x = 638,175,358.80

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1.5x scale

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.