Home / 1,015,155,489.85-1,401,373,606.19-639,364,356.95

Finding the Fourth Proportional to 1,015,155,489.85, 1,401,373,606.19 and 639,364,356.95

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Solution

The fourth proportional to 1,015,155,489.85, 1,401,373,606.19 and 639,364,356.95 is: 882,611,918.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015,155,489.85 : 1,401,373,606.19 = 639,364,356.95 : x
  2. Step 2: Convert to fraction form
    1,015,155,489.85/1,401,373,606.19 = 639,364,356.95/x
  3. Step 3: Cross multiply
    1,015,155,489.85x = 1,401,373,606.19 × 639,364,356.95
  4. Step 4: Simplify right side
    1,015,155,489.85x = 895,988,334,558,168,192
  5. Step 5: Solve for x
    x = 895,988,334,558,168,192/1,015,155,489.85
  6. Step 6: Final answer
    x = 882,611,918.59

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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.