Home / 1,538,573.80-2,308,287.30-640,438.60

Finding the Fourth Proportional to 1,538,573.80, 2,308,287.30 and 640,438.60

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Solution

The fourth proportional to 1,538,573.80, 2,308,287.30 and 640,438.60 is: 960,835.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,573.80 : 2,308,287.30 = 640,438.60 : x
  2. Step 2: Convert to fraction form
    1,538,573.80/2,308,287.30 = 640,438.60/x
  3. Step 3: Cross multiply
    1,538,573.80x = 2,308,287.30 × 640,438.60
  4. Step 4: Simplify right side
    1,538,573.80x = 1,478,316,286,809.78
  5. Step 5: Solve for x
    x = 1,478,316,286,809.78/1,538,573.80
  6. Step 6: Final answer
    x = 960,835.47

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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.