Home / 413,905.40-620,966.10-133,429.40

Finding the Fourth Proportional to 413,905.40, 620,966.10 and 133,429.40

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Solution

The fourth proportional to 413,905.40, 620,966.10 and 133,429.40 is: 200,178.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,905.40 : 620,966.10 = 133,429.40 : x
  2. Step 2: Convert to fraction form
    413,905.40/620,966.10 = 133,429.40/x
  3. Step 3: Cross multiply
    413,905.40x = 620,966.10 × 133,429.40
  4. Step 4: Simplify right side
    413,905.40x = 82,855,134,143.34
  5. Step 5: Solve for x
    x = 82,855,134,143.34/413,905.40
  6. Step 6: Final answer
    x = 200,178.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.