Home / 427,458,680.36-589,588,881.02-392,290,053.20

Finding the Fourth Proportional to 427,458,680.36, 589,588,881.02 and 392,290,053.20

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Solution

The fourth proportional to 427,458,680.36, 589,588,881.02 and 392,290,053.20 is: 541,081,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,458,680.36 : 589,588,881.02 = 392,290,053.20 : x
  2. Step 2: Convert to fraction form
    427,458,680.36/589,588,881.02 = 392,290,053.20/x
  3. Step 3: Cross multiply
    427,458,680.36x = 589,588,881.02 × 392,290,053.20
  4. Step 4: Simplify right side
    427,458,680.36x = 231,289,853,496,554,880
  5. Step 5: Solve for x
    x = 231,289,853,496,554,880/427,458,680.36
  6. Step 6: Final answer
    x = 541,081,194.81

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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.