Home / 929,121,772.89-1,282,221,872.91-505,714,965.57

Finding the Fourth Proportional to 929,121,772.89, 1,282,221,872.91 and 505,714,965.57

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Solution

The fourth proportional to 929,121,772.89, 1,282,221,872.91 and 505,714,965.57 is: 697,905,063.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,121,772.89 : 1,282,221,872.91 = 505,714,965.57 : x
  2. Step 2: Convert to fraction form
    929,121,772.89/1,282,221,872.91 = 505,714,965.57/x
  3. Step 3: Cross multiply
    929,121,772.89x = 1,282,221,872.91 × 505,714,965.57
  4. Step 4: Simplify right side
    929,121,772.89x = 648,438,790,311,781,632
  5. Step 5: Solve for x
    x = 648,438,790,311,781,632/929,121,772.89
  6. Step 6: Final answer
    x = 697,905,063.93

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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.