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Finding the Fourth Proportional to 553,811,308.76, 764,494,929.34 and 345,070,586

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Solution

The fourth proportional to 553,811,308.76, 764,494,929.34 and 345,070,586 is: 476,344,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,811,308.76 : 764,494,929.34 = 345,070,586 : x
  2. Step 2: Convert to fraction form
    553,811,308.76/764,494,929.34 = 345,070,586/x
  3. Step 3: Cross multiply
    553,811,308.76x = 764,494,929.34 × 345,070,586
  4. Step 4: Simplify right side
    553,811,308.76x = 263,804,713,261,382,400
  5. Step 5: Solve for x
    x = 263,804,713,261,382,400/553,811,308.76
  6. Step 6: Final answer
    x = 476,344,034.67

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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.