Home / 641,379,091.56-961,717,919.50-509,280,508.56

Finding the Fourth Proportional to 641,379,091.56, 961,717,919.50 and 509,280,508.56

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Solution

The fourth proportional to 641,379,091.56, 961,717,919.50 and 509,280,508.56 is: 763,642,278.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,379,091.56 : 961,717,919.50 = 509,280,508.56 : x
  2. Step 2: Convert to fraction form
    641,379,091.56/961,717,919.50 = 509,280,508.56/x
  3. Step 3: Cross multiply
    641,379,091.56x = 961,717,919.50 × 509,280,508.56
  4. Step 4: Simplify right side
    641,379,091.56x = 489,784,191,134,225,152
  5. Step 5: Solve for x
    x = 489,784,191,134,225,152/641,379,091.56
  6. Step 6: Final answer
    x = 763,642,278.93

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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.