Home / 639,747,009.56-959,974,614.18-312,225,235.64

Finding the Fourth Proportional to 639,747,009.56, 959,974,614.18 and 312,225,235.64

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Solution

The fourth proportional to 639,747,009.56, 959,974,614.18 and 312,225,235.64 is: 468,510,670.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,747,009.56 : 959,974,614.18 = 312,225,235.64 : x
  2. Step 2: Convert to fraction form
    639,747,009.56/959,974,614.18 = 312,225,235.64/x
  3. Step 3: Cross multiply
    639,747,009.56x = 959,974,614.18 × 312,225,235.64
  4. Step 4: Simplify right side
    639,747,009.56x = 299,728,300,120,768,576
  5. Step 5: Solve for x
    x = 299,728,300,120,768,576/639,747,009.56
  6. Step 6: Final answer
    x = 468,510,670.06

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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.