Home / 751,767.05-1,128,612.86-645,828.77

Finding the Fourth Proportional to 751,767.05, 1,128,612.86 and 645,828.77

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Solution

The fourth proportional to 751,767.05, 1,128,612.86 and 645,828.77 is: 969,569.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,767.05 : 1,128,612.86 = 645,828.77 : x
  2. Step 2: Convert to fraction form
    751,767.05/1,128,612.86 = 645,828.77/x
  3. Step 3: Cross multiply
    751,767.05x = 1,128,612.86 × 645,828.77
  4. Step 4: Simplify right side
    751,767.05x = 728,890,646,307.77
  5. Step 5: Solve for x
    x = 728,890,646,307.77/751,767.05
  6. Step 6: Final answer
    x = 969,569.83

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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.