Home / 780,212.28-1,076,095.62-538,898.70

Finding the Fourth Proportional to 780,212.28, 1,076,095.62 and 538,898.70

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Solution

The fourth proportional to 780,212.28, 1,076,095.62 and 538,898.70 is: 743,267.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,212.28 : 1,076,095.62 = 538,898.70 : x
  2. Step 2: Convert to fraction form
    780,212.28/1,076,095.62 = 538,898.70/x
  3. Step 3: Cross multiply
    780,212.28x = 1,076,095.62 × 538,898.70
  4. Step 4: Simplify right side
    780,212.28x = 579,906,530,693.69
  5. Step 5: Solve for x
    x = 579,906,530,693.69/780,212.28
  6. Step 6: Final answer
    x = 743,267.63

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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.