Home / 670,729.40-1,006,142.70-403,915.40

Finding the Fourth Proportional to 670,729.40, 1,006,142.70 and 403,915.40

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Solution

The fourth proportional to 670,729.40, 1,006,142.70 and 403,915.40 is: 605,902.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,729.40 : 1,006,142.70 = 403,915.40 : x
  2. Step 2: Convert to fraction form
    670,729.40/1,006,142.70 = 403,915.40/x
  3. Step 3: Cross multiply
    670,729.40x = 1,006,142.70 × 403,915.40
  4. Step 4: Simplify right side
    670,729.40x = 406,396,531,127.58
  5. Step 5: Solve for x
    x = 406,396,531,127.58/670,729.40
  6. Step 6: Final answer
    x = 605,902.37

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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.