Home / 710,911-981,056.94-388,622.44

Finding the Fourth Proportional to 710,911, 981,056.94 and 388,622.44

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Solution

The fourth proportional to 710,911, 981,056.94 and 388,622.44 is: 536,298.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,911 : 981,056.94 = 388,622.44 : x
  2. Step 2: Convert to fraction form
    710,911/981,056.94 = 388,622.44/x
  3. Step 3: Cross multiply
    710,911x = 981,056.94 × 388,622.44
  4. Step 4: Simplify right side
    710,911x = 381,260,741,801.73
  5. Step 5: Solve for x
    x = 381,260,741,801.73/710,911
  6. Step 6: Final answer
    x = 536,298.84

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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.