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Finding the Fourth Proportional to 673,831.31, 929,890.40 and 367,913.88

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Solution

The fourth proportional to 673,831.31, 929,890.40 and 367,913.88 is: 507,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,831.31 : 929,890.40 = 367,913.88 : x
  2. Step 2: Convert to fraction form
    673,831.31/929,890.40 = 367,913.88/x
  3. Step 3: Cross multiply
    673,831.31x = 929,890.40 × 367,913.88
  4. Step 4: Simplify right side
    673,831.31x = 342,119,583,199.18
  5. Step 5: Solve for x
    x = 342,119,583,199.18/673,831.31
  6. Step 6: Final answer
    x = 507,722.90

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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.