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Finding the Fourth Proportional to 409,709,991.30, 614,564,986.95 and 409,709,991.30

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Solution

The fourth proportional to 409,709,991.30, 614,564,986.95 and 409,709,991.30 is: 614,564,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,709,991.30 : 614,564,986.95 = 409,709,991.30 : x
  2. Step 2: Convert to fraction form
    409,709,991.30/614,564,986.95 = 409,709,991.30/x
  3. Step 3: Cross multiply
    409,709,991.30x = 614,564,986.95 × 409,709,991.30
  4. Step 4: Simplify right side
    409,709,991.30x = 251,793,415,456,569,152
  5. Step 5: Solve for x
    x = 251,793,415,456,569,152/409,709,991.30
  6. Step 6: Final answer
    x = 614,564,986.95

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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.