Home / 1,245,221,010.45-1,718,416,428.48-709,364,733.78

Finding the Fourth Proportional to 1,245,221,010.45, 1,718,416,428.48 and 709,364,733.78

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Solution

The fourth proportional to 1,245,221,010.45, 1,718,416,428.48 and 709,364,733.78 is: 978,929,846.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,221,010.45 : 1,718,416,428.48 = 709,364,733.78 : x
  2. Step 2: Convert to fraction form
    1,245,221,010.45/1,718,416,428.48 = 709,364,733.78/x
  3. Step 3: Cross multiply
    1,245,221,010.45x = 1,718,416,428.48 × 709,364,733.78
  4. Step 4: Simplify right side
    1,245,221,010.45x = 1,218,984,012,311,893,504
  5. Step 5: Solve for x
    x = 1,218,984,012,311,893,504/1,245,221,010.45
  6. Step 6: Final answer
    x = 978,929,846.25

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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.