Home / 638,457.73-881,078.45-351,988.07

Finding the Fourth Proportional to 638,457.73, 881,078.45 and 351,988.07

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Solution

The fourth proportional to 638,457.73, 881,078.45 and 351,988.07 is: 485,747.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,457.73 : 881,078.45 = 351,988.07 : x
  2. Step 2: Convert to fraction form
    638,457.73/881,078.45 = 351,988.07/x
  3. Step 3: Cross multiply
    638,457.73x = 881,078.45 × 351,988.07
  4. Step 4: Simplify right side
    638,457.73x = 310,129,096,968.76
  5. Step 5: Solve for x
    x = 310,129,096,968.76/638,457.73
  6. Step 6: Final answer
    x = 485,747.27

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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.