Home / 738,348.68-1,018,921.60-398,816.94

Finding the Fourth Proportional to 738,348.68, 1,018,921.60 and 398,816.94

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Solution

The fourth proportional to 738,348.68, 1,018,921.60 and 398,816.94 is: 550,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,348.68 : 1,018,921.60 = 398,816.94 : x
  2. Step 2: Convert to fraction form
    738,348.68/1,018,921.60 = 398,816.94/x
  3. Step 3: Cross multiply
    738,348.68x = 1,018,921.60 × 398,816.94
  4. Step 4: Simplify right side
    738,348.68x = 406,363,194,611.90
  5. Step 5: Solve for x
    x = 406,363,194,611.90/738,348.68
  6. Step 6: Final answer
    x = 550,367.60

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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.