Home / 1,015,155,431.07-1,401,373,525.07-639,364,298.17

Finding the Fourth Proportional to 1,015,155,431.07, 1,401,373,525.07 and 639,364,298.17

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Solution

The fourth proportional to 1,015,155,431.07, 1,401,373,525.07 and 639,364,298.17 is: 882,611,837.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015,155,431.07 : 1,401,373,525.07 = 639,364,298.17 : x
  2. Step 2: Convert to fraction form
    1,015,155,431.07/1,401,373,525.07 = 639,364,298.17/x
  3. Step 3: Cross multiply
    1,015,155,431.07x = 1,401,373,525.07 × 639,364,298.17
  4. Step 4: Simplify right side
    1,015,155,431.07x = 895,988,200,330,399,360
  5. Step 5: Solve for x
    x = 895,988,200,330,399,360/1,015,155,431.07
  6. Step 6: Final answer
    x = 882,611,837.47

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Double scale
Find fourth proportional to 1,015,155,432.07, 1,401,373,526.45 and 639,364,299.17
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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.