Home / 1,115,034,421,718.40-1,538,747,575,967.10-620,628,368,780.50

Finding the Fourth Proportional to 1,115,034,421,718.40, 1,538,747,575,967.10 and 620,628,368,780.50

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Solution

The fourth proportional to 1,115,034,421,718.40, 1,538,747,575,967.10 and 620,628,368,780.50 is: 856,467,190,103.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,034,421,718.40 : 1,538,747,575,967.10 = 620,628,368,780.50 : x
  2. Step 2: Convert to fraction form
    1,115,034,421,718.40/1,538,747,575,967.10 = 620,628,368,780.50/x
  3. Step 3: Cross multiply
    1,115,034,421,718.40x = 1,538,747,575,967.10 × 620,628,368,780.50
  4. Step 4: Simplify right side
    1,115,034,421,718.40x = 954,990,398,037,409,809,825,792
  5. Step 5: Solve for x
    x = 954,990,398,037,409,809,825,792/1,115,034,421,718.40
  6. Step 6: Final answer
    x = 856,467,190,103.12

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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.