Home / 639,724,000.10-959,586,039.03-155,049,808.10

Finding the Fourth Proportional to 639,724,000.10, 959,586,039.03 and 155,049,808.10

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Solution

The fourth proportional to 639,724,000.10, 959,586,039.03 and 155,049,808.10 is: 232,574,721.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,724,000.10 : 959,586,039.03 = 155,049,808.10 : x
  2. Step 2: Convert to fraction form
    639,724,000.10/959,586,039.03 = 155,049,808.10/x
  3. Step 3: Cross multiply
    639,724,000.10x = 959,586,039.03 × 155,049,808.10
  4. Step 4: Simplify right side
    639,724,000.10x = 148,783,631,207,040,608
  5. Step 5: Solve for x
    x = 148,783,631,207,040,608/639,724,000.10
  6. Step 6: Final answer
    x = 232,574,721.57

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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.