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Finding the Fourth Proportional to 723,000, 1,085,150.46 and 386,328.44

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Solution

The fourth proportional to 723,000, 1,085,150.46 and 386,328.44 is: 579,840.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,000 : 1,085,150.46 = 386,328.44 : x
  2. Step 2: Convert to fraction form
    723,000/1,085,150.46 = 386,328.44/x
  3. Step 3: Cross multiply
    723,000x = 1,085,150.46 × 386,328.44
  4. Step 4: Simplify right side
    723,000x = 419,224,484,377.08
  5. Step 5: Solve for x
    x = 419,224,484,377.08/723,000
  6. Step 6: Final answer
    x = 579,840.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.