Home / 521,855,429.31-783,350,346.51-211,176,939.81

Finding the Fourth Proportional to 521,855,429.31, 783,350,346.51 and 211,176,939.81

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Solution

The fourth proportional to 521,855,429.31, 783,350,346.51 and 211,176,939.81 is: 316,994,937.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,855,429.31 : 783,350,346.51 = 211,176,939.81 : x
  2. Step 2: Convert to fraction form
    521,855,429.31/783,350,346.51 = 211,176,939.81/x
  3. Step 3: Cross multiply
    521,855,429.31x = 783,350,346.51 × 211,176,939.81
  4. Step 4: Simplify right side
    521,855,429.31x = 165,425,528,975,084,928
  5. Step 5: Solve for x
    x = 165,425,528,975,084,928/521,855,429.31
  6. Step 6: Final answer
    x = 316,994,937.07

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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.