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Finding the Fourth Proportional to 319,696,977.20, 479,545,465.80 and 319,696,977.20

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Solution

The fourth proportional to 319,696,977.20, 479,545,465.80 and 319,696,977.20 is: 479,545,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,696,977.20 : 479,545,465.80 = 319,696,977.20 : x
  2. Step 2: Convert to fraction form
    319,696,977.20/479,545,465.80 = 319,696,977.20/x
  3. Step 3: Cross multiply
    319,696,977.20x = 479,545,465.80 × 319,696,977.20
  4. Step 4: Simplify right side
    319,696,977.20x = 153,309,235,846,225,984
  5. Step 5: Solve for x
    x = 153,309,235,846,225,984/319,696,977.20
  6. Step 6: Final answer
    x = 479,545,465.80

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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.