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Finding the Fourth Proportional to 618,787.28, 853,874.28 and 343,153.04

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Solution

The fourth proportional to 618,787.28, 853,874.28 and 343,153.04 is: 473,522.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,787.28 : 853,874.28 = 343,153.04 : x
  2. Step 2: Convert to fraction form
    618,787.28/853,874.28 = 343,153.04/x
  3. Step 3: Cross multiply
    618,787.28x = 853,874.28 × 343,153.04
  4. Step 4: Simplify right side
    618,787.28x = 293,009,554,959.81
  5. Step 5: Solve for x
    x = 293,009,554,959.81/618,787.28
  6. Step 6: Final answer
    x = 473,522.27

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1.5x scale

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.