Home / 389,688,036.54-537,765,204.70-211,067,481.05

Finding the Fourth Proportional to 389,688,036.54, 537,765,204.70 and 211,067,481.05

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Solution

The fourth proportional to 389,688,036.54, 537,765,204.70 and 211,067,481.05 is: 291,270,802.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,688,036.54 : 537,765,204.70 = 211,067,481.05 : x
  2. Step 2: Convert to fraction form
    389,688,036.54/537,765,204.70 = 211,067,481.05/x
  3. Step 3: Cross multiply
    389,688,036.54x = 537,765,204.70 × 211,067,481.05
  4. Step 4: Simplify right side
    389,688,036.54x = 113,504,747,154,069,952
  5. Step 5: Solve for x
    x = 113,504,747,154,069,952/389,688,036.54
  6. Step 6: Final answer
    x = 291,270,802.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.