Home / 411,542.28-620,398.02-384,109.11

Finding the Fourth Proportional to 411,542.28, 620,398.02 and 384,109.11

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Solution

The fourth proportional to 411,542.28, 620,398.02 and 384,109.11 is: 579,042.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,542.28 : 620,398.02 = 384,109.11 : x
  2. Step 2: Convert to fraction form
    411,542.28/620,398.02 = 384,109.11/x
  3. Step 3: Cross multiply
    411,542.28x = 620,398.02 × 384,109.11
  4. Step 4: Simplify right side
    411,542.28x = 238,300,531,307.96
  5. Step 5: Solve for x
    x = 238,300,531,307.96/411,542.28
  6. Step 6: Final answer
    x = 579,042.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.