Home / 710,982.48-981,156.36-388,687.44

Finding the Fourth Proportional to 710,982.48, 981,156.36 and 388,687.44

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Solution

The fourth proportional to 710,982.48, 981,156.36 and 388,687.44 is: 536,388.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,982.48 : 981,156.36 = 388,687.44 : x
  2. Step 2: Convert to fraction form
    710,982.48/981,156.36 = 388,687.44/x
  3. Step 3: Cross multiply
    710,982.48x = 981,156.36 × 388,687.44
  4. Step 4: Simplify right side
    710,982.48x = 381,363,153,808.12
  5. Step 5: Solve for x
    x = 381,363,153,808.12/710,982.48
  6. Step 6: Final answer
    x = 536,388.96

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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.