Home / 393,982,205.80-590,973,308.70-121,317,543.40

Finding the Fourth Proportional to 393,982,205.80, 590,973,308.70 and 121,317,543.40

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Solution

The fourth proportional to 393,982,205.80, 590,973,308.70 and 121,317,543.40 is: 181,976,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,982,205.80 : 590,973,308.70 = 121,317,543.40 : x
  2. Step 2: Convert to fraction form
    393,982,205.80/590,973,308.70 = 121,317,543.40/x
  3. Step 3: Cross multiply
    393,982,205.80x = 590,973,308.70 × 121,317,543.40
  4. Step 4: Simplify right side
    393,982,205.80x = 71,695,430,026,453,856
  5. Step 5: Solve for x
    x = 71,695,430,026,453,856/393,982,205.80
  6. Step 6: Final answer
    x = 181,976,315.10

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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.