Home / 869,251,715.10-1,303,429,675.05-323,712,438.30

Finding the Fourth Proportional to 869,251,715.10, 1,303,429,675.05 and 323,712,438.30

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Solution

The fourth proportional to 869,251,715.10, 1,303,429,675.05 and 323,712,438.30 is: 485,401,858.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,251,715.10 : 1,303,429,675.05 = 323,712,438.30 : x
  2. Step 2: Convert to fraction form
    869,251,715.10/1,303,429,675.05 = 323,712,438.30/x
  3. Step 3: Cross multiply
    869,251,715.10x = 1,303,429,675.05 × 323,712,438.30
  4. Step 4: Simplify right side
    869,251,715.10x = 421,936,398,263,012,160
  5. Step 5: Solve for x
    x = 421,936,398,263,012,160/869,251,715.10
  6. Step 6: Final answer
    x = 485,401,858.79

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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.