Home / 878,710,792.50-1,212,620,896.53-487,633,150.26

Finding the Fourth Proportional to 878,710,792.50, 1,212,620,896.53 and 487,633,150.26

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Solution

The fourth proportional to 878,710,792.50, 1,212,620,896.53 and 487,633,150.26 is: 672,933,748.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,710,792.50 : 1,212,620,896.53 = 487,633,150.26 : x
  2. Step 2: Convert to fraction form
    878,710,792.50/1,212,620,896.53 = 487,633,150.26/x
  3. Step 3: Cross multiply
    878,710,792.50x = 1,212,620,896.53 × 487,633,150.26
  4. Step 4: Simplify right side
    878,710,792.50x = 591,314,147,846,029,440
  5. Step 5: Solve for x
    x = 591,314,147,846,029,440/878,710,792.50
  6. Step 6: Final answer
    x = 672,933,748.96

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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.