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Finding the Fourth Proportional to 680,915.40, 1,019,529.90 and 533,459.40

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Solution

The fourth proportional to 680,915.40, 1,019,529.90 and 533,459.40 is: 798,745.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,915.40 : 1,019,529.90 = 533,459.40 : x
  2. Step 2: Convert to fraction form
    680,915.40/1,019,529.90 = 533,459.40/x
  3. Step 3: Cross multiply
    680,915.40x = 1,019,529.90 × 533,459.40
  4. Step 4: Simplify right side
    680,915.40x = 543,877,808,736.06
  5. Step 5: Solve for x
    x = 543,877,808,736.06/680,915.40
  6. Step 6: Final answer
    x = 798,745.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.