Home / 428,697,699.84-642,450,810.96-223,817,090.40

Finding the Fourth Proportional to 428,697,699.84, 642,450,810.96 and 223,817,090.40

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Solution

The fourth proportional to 428,697,699.84, 642,450,810.96 and 223,817,090.40 is: 335,414,608.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,697,699.84 : 642,450,810.96 = 223,817,090.40 : x
  2. Step 2: Convert to fraction form
    428,697,699.84/642,450,810.96 = 223,817,090.40/x
  3. Step 3: Cross multiply
    428,697,699.84x = 642,450,810.96 × 223,817,090.40
  4. Step 4: Simplify right side
    428,697,699.84x = 143,791,471,234,187,648
  5. Step 5: Solve for x
    x = 143,791,471,234,187,648/428,697,699.84
  6. Step 6: Final answer
    x = 335,414,608.68

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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.