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Finding the Fourth Proportional to 1,320,966.76, 1,823,492.10 and 891,828.10

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Solution

The fourth proportional to 1,320,966.76, 1,823,492.10 and 891,828.10 is: 1,231,099.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,966.76 : 1,823,492.10 = 891,828.10 : x
  2. Step 2: Convert to fraction form
    1,320,966.76/1,823,492.10 = 891,828.10/x
  3. Step 3: Cross multiply
    1,320,966.76x = 1,823,492.10 × 891,828.10
  4. Step 4: Simplify right side
    1,320,966.76x = 1,626,241,494,908.01
  5. Step 5: Solve for x
    x = 1,626,241,494,908.01/1,320,966.76
  6. Step 6: Final answer
    x = 1,231,099.48

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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.