Home / 927,980.97-1,280,628.89-520,173.51

Finding the Fourth Proportional to 927,980.97, 1,280,628.89 and 520,173.51

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Solution

The fourth proportional to 927,980.97, 1,280,628.89 and 520,173.51 is: 717,847.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,980.97 : 1,280,628.89 = 520,173.51 : x
  2. Step 2: Convert to fraction form
    927,980.97/1,280,628.89 = 520,173.51/x
  3. Step 3: Cross multiply
    927,980.97x = 1,280,628.89 × 520,173.51
  4. Step 4: Simplify right side
    927,980.97x = 666,149,222,117.84
  5. Step 5: Solve for x
    x = 666,149,222,117.84/927,980.97
  6. Step 6: Final answer
    x = 717,847.93

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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.