Home / 781,915.85-1,078,984.23-437,672.94

Finding the Fourth Proportional to 781,915.85, 1,078,984.23 and 437,672.94

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Solution

The fourth proportional to 781,915.85, 1,078,984.23 and 437,672.94 is: 603,955.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,915.85 : 1,078,984.23 = 437,672.94 : x
  2. Step 2: Convert to fraction form
    781,915.85/1,078,984.23 = 437,672.94/x
  3. Step 3: Cross multiply
    781,915.85x = 1,078,984.23 × 437,672.94
  4. Step 4: Simplify right side
    781,915.85x = 472,242,194,470.27
  5. Step 5: Solve for x
    x = 472,242,194,470.27/781,915.85
  6. Step 6: Final answer
    x = 603,955.27

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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.