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Finding the Fourth Proportional to 638,910.37, 881,697.18 and 367,030.90

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Solution

The fourth proportional to 638,910.37, 881,697.18 and 367,030.90 is: 506,503.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,910.37 : 881,697.18 = 367,030.90 : x
  2. Step 2: Convert to fraction form
    638,910.37/881,697.18 = 367,030.90/x
  3. Step 3: Cross multiply
    638,910.37x = 881,697.18 × 367,030.90
  4. Step 4: Simplify right side
    638,910.37x = 323,610,109,502.86
  5. Step 5: Solve for x
    x = 323,610,109,502.86/638,910.37
  6. Step 6: Final answer
    x = 506,503.14

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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.