Home / 393,983,443.80-590,975,165.70-121,318,781.40

Finding the Fourth Proportional to 393,983,443.80, 590,975,165.70 and 121,318,781.40

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Solution

The fourth proportional to 393,983,443.80, 590,975,165.70 and 121,318,781.40 is: 181,978,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,983,443.80 : 590,975,165.70 = 121,318,781.40 : x
  2. Step 2: Convert to fraction form
    393,983,443.80/590,975,165.70 = 121,318,781.40/x
  3. Step 3: Cross multiply
    393,983,443.80x = 590,975,165.70 × 121,318,781.40
  4. Step 4: Simplify right side
    393,983,443.80x = 71,696,386,940,387,088
  5. Step 5: Solve for x
    x = 71,696,386,940,387,088/393,983,443.80
  6. Step 6: Final answer
    x = 181,978,172.10

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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.