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Finding the Fourth Proportional to 1,123,354, 1,685,031 and 375,400

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Solution

The fourth proportional to 1,123,354, 1,685,031 and 375,400 is: 563,100

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,354 : 1,685,031 = 375,400 : x
  2. Step 2: Convert to fraction form
    1,123,354/1,685,031 = 375,400/x
  3. Step 3: Cross multiply
    1,123,354x = 1,685,031 × 375,400
  4. Step 4: Simplify right side
    1,123,354x = 632,560,637,400
  5. Step 5: Solve for x
    x = 632,560,637,400/1,123,354
  6. Step 6: Final answer
    x = 563,100

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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.