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Finding the Fourth Proportional to 776,735.84, 1,071,639.12 and 633,249.20

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Solution

The fourth proportional to 776,735.84, 1,071,639.12 and 633,249.20 is: 873,674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,735.84 : 1,071,639.12 = 633,249.20 : x
  2. Step 2: Convert to fraction form
    776,735.84/1,071,639.12 = 633,249.20/x
  3. Step 3: Cross multiply
    776,735.84x = 1,071,639.12 × 633,249.20
  4. Step 4: Simplify right side
    776,735.84x = 678,614,615,428.70
  5. Step 5: Solve for x
    x = 678,614,615,428.70/776,735.84
  6. Step 6: Final answer
    x = 873,674.91

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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.