Home / 428,581,066.79-642,802,731.50-117,616,042.01

Finding the Fourth Proportional to 428,581,066.79, 642,802,731.50 and 117,616,042.01

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Solution

The fourth proportional to 428,581,066.79, 642,802,731.50 and 117,616,042.01 is: 176,405,163.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,581,066.79 : 642,802,731.50 = 117,616,042.01 : x
  2. Step 2: Convert to fraction form
    428,581,066.79/642,802,731.50 = 117,616,042.01/x
  3. Step 3: Cross multiply
    428,581,066.79x = 642,802,731.50 × 117,616,042.01
  4. Step 4: Simplify right side
    428,581,066.79x = 75,603,913,069,326,784
  5. Step 5: Solve for x
    x = 75,603,913,069,326,784/428,581,066.79
  6. Step 6: Final answer
    x = 176,405,163.29

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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.