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Finding the Fourth Proportional to 553,881,786.90, 764,375,097.15 and 302,980,437.01

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Solution

The fourth proportional to 553,881,786.90, 764,375,097.15 and 302,980,437.01 is: 418,122,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,881,786.90 : 764,375,097.15 = 302,980,437.01 : x
  2. Step 2: Convert to fraction form
    553,881,786.90/764,375,097.15 = 302,980,437.01/x
  3. Step 3: Cross multiply
    553,881,786.90x = 764,375,097.15 × 302,980,437.01
  4. Step 4: Simplify right side
    553,881,786.90x = 231,590,700,971,399,808
  5. Step 5: Solve for x
    x = 231,590,700,971,399,808/553,881,786.90
  6. Step 6: Final answer
    x = 418,122,975.79

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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.