Home / 393,983,648.80-590,975,473.20-121,318,986.40

Finding the Fourth Proportional to 393,983,648.80, 590,975,473.20 and 121,318,986.40

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Solution

The fourth proportional to 393,983,648.80, 590,975,473.20 and 121,318,986.40 is: 181,978,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,983,648.80 : 590,975,473.20 = 121,318,986.40 : x
  2. Step 2: Convert to fraction form
    393,983,648.80/590,975,473.20 = 121,318,986.40/x
  3. Step 3: Cross multiply
    393,983,648.80x = 590,975,473.20 × 121,318,986.40
  4. Step 4: Simplify right side
    393,983,648.80x = 71,696,545,395,884,376
  5. Step 5: Solve for x
    x = 71,696,545,395,884,376/393,983,648.80
  6. Step 6: Final answer
    x = 181,978,479.60

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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.