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Finding the Fourth Proportional to 1,422,432, 2,133,648 and 371,808

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Solution

The fourth proportional to 1,422,432, 2,133,648 and 371,808 is: 557,712

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,432 : 2,133,648 = 371,808 : x
  2. Step 2: Convert to fraction form
    1,422,432/2,133,648 = 371,808/x
  3. Step 3: Cross multiply
    1,422,432x = 2,133,648 × 371,808
  4. Step 4: Simplify right side
    1,422,432x = 793,307,395,584
  5. Step 5: Solve for x
    x = 793,307,395,584/1,422,432
  6. Step 6: Final answer
    x = 557,712

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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.