Home / 393,939,346.40-590,909,019.60-121,393,656.80

Finding the Fourth Proportional to 393,939,346.40, 590,909,019.60 and 121,393,656.80

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Solution

The fourth proportional to 393,939,346.40, 590,909,019.60 and 121,393,656.80 is: 182,090,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,939,346.40 : 590,909,019.60 = 121,393,656.80 : x
  2. Step 2: Convert to fraction form
    393,939,346.40/590,909,019.60 = 121,393,656.80/x
  3. Step 3: Cross multiply
    393,939,346.40x = 590,909,019.60 × 121,393,656.80
  4. Step 4: Simplify right side
    393,939,346.40x = 71,732,606,725,346,872
  5. Step 5: Solve for x
    x = 71,732,606,725,346,872/393,939,346.40
  6. Step 6: Final answer
    x = 182,090,485.20

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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.