Home / 428,016,974.94-640,935,557.82-282,007,877.67

Finding the Fourth Proportional to 428,016,974.94, 640,935,557.82 and 282,007,877.67

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Solution

The fourth proportional to 428,016,974.94, 640,935,557.82 and 282,007,877.67 is: 422,293,710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,016,974.94 : 640,935,557.82 = 282,007,877.67 : x
  2. Step 2: Convert to fraction form
    428,016,974.94/640,935,557.82 = 282,007,877.67/x
  3. Step 3: Cross multiply
    428,016,974.94x = 640,935,557.82 × 282,007,877.67
  4. Step 4: Simplify right side
    428,016,974.94x = 180,748,876,384,055,808
  5. Step 5: Solve for x
    x = 180,748,876,384,055,808/428,016,974.94
  6. Step 6: Final answer
    x = 422,293,710.22

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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.