Home / 738,361.92-1,018,939.47-398,830.17

Finding the Fourth Proportional to 738,361.92, 1,018,939.47 and 398,830.17

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Solution

The fourth proportional to 738,361.92, 1,018,939.47 and 398,830.17 is: 550,385.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,361.92 : 1,018,939.47 = 398,830.17 : x
  2. Step 2: Convert to fraction form
    738,361.92/1,018,939.47 = 398,830.17/x
  3. Step 3: Cross multiply
    738,361.92x = 1,018,939.47 × 398,830.17
  4. Step 4: Simplify right side
    738,361.92x = 406,383,802,039.81
  5. Step 5: Solve for x
    x = 406,383,802,039.81/738,361.92
  6. Step 6: Final answer
    x = 550,385.65

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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.