Home / 738,344.25-1,018,915.47-398,812.50

Finding the Fourth Proportional to 738,344.25, 1,018,915.47 and 398,812.50

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Solution

The fourth proportional to 738,344.25, 1,018,915.47 and 398,812.50 is: 550,361.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,344.25 : 1,018,915.47 = 398,812.50 : x
  2. Step 2: Convert to fraction form
    738,344.25/1,018,915.47 = 398,812.50/x
  3. Step 3: Cross multiply
    738,344.25x = 1,018,915.47 × 398,812.50
  4. Step 4: Simplify right side
    738,344.25x = 406,356,225,879.38
  5. Step 5: Solve for x
    x = 406,356,225,879.38/738,344.25
  6. Step 6: Final answer
    x = 550,361.47

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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.