Home / 499,760,145.40-749,709,969.30-208,560,518.20

Finding the Fourth Proportional to 499,760,145.40, 749,709,969.30 and 208,560,518.20

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Solution

The fourth proportional to 499,760,145.40, 749,709,969.30 and 208,560,518.20 is: 312,869,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,760,145.40 : 749,709,969.30 = 208,560,518.20 : x
  2. Step 2: Convert to fraction form
    499,760,145.40/749,709,969.30 = 208,560,518.20/x
  3. Step 3: Cross multiply
    499,760,145.40x = 749,709,969.30 × 208,560,518.20
  4. Step 4: Simplify right side
    499,760,145.40x = 156,359,899,696,914,080
  5. Step 5: Solve for x
    x = 156,359,899,696,914,080/499,760,145.40
  6. Step 6: Final answer
    x = 312,869,885.96

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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.