Home / 738,172.36-1,018,677.87-398,640.61

Finding the Fourth Proportional to 738,172.36, 1,018,677.87 and 398,640.61

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Solution

The fourth proportional to 738,172.36, 1,018,677.87 and 398,640.61 is: 550,124.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,172.36 : 1,018,677.87 = 398,640.61 : x
  2. Step 2: Convert to fraction form
    738,172.36/1,018,677.87 = 398,640.61/x
  3. Step 3: Cross multiply
    738,172.36x = 1,018,677.87 × 398,640.61
  4. Step 4: Simplify right side
    738,172.36x = 406,086,360,403.71
  5. Step 5: Solve for x
    x = 406,086,360,403.71/738,172.36
  6. Step 6: Final answer
    x = 550,124.04

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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.