Home / 1,640,478.40-2,461,063.20-693,361.60

Finding the Fourth Proportional to 1,640,478.40, 2,461,063.20 and 693,361.60

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Solution

The fourth proportional to 1,640,478.40, 2,461,063.20 and 693,361.60 is: 1,040,188.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,478.40 : 2,461,063.20 = 693,361.60 : x
  2. Step 2: Convert to fraction form
    1,640,478.40/2,461,063.20 = 693,361.60/x
  3. Step 3: Cross multiply
    1,640,478.40x = 2,461,063.20 × 693,361.60
  4. Step 4: Simplify right side
    1,640,478.40x = 1,706,406,718,053.12
  5. Step 5: Solve for x
    x = 1,706,406,718,053.12/1,640,478.40
  6. Step 6: Final answer
    x = 1,040,188.47

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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.