Home / 858,511,991.10-1,288,193,139.45-490,329,666.30

Finding the Fourth Proportional to 858,511,991.10, 1,288,193,139.45 and 490,329,666.30

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Solution

The fourth proportional to 858,511,991.10, 1,288,193,139.45 and 490,329,666.30 is: 735,737,320.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,511,991.10 : 1,288,193,139.45 = 490,329,666.30 : x
  2. Step 2: Convert to fraction form
    858,511,991.10/1,288,193,139.45 = 490,329,666.30/x
  3. Step 3: Cross multiply
    858,511,991.10x = 1,288,193,139.45 × 490,329,666.30
  4. Step 4: Simplify right side
    858,511,991.10x = 631,639,312,196,467,968
  5. Step 5: Solve for x
    x = 631,639,312,196,467,968/858,511,991.10
  6. Step 6: Final answer
    x = 735,737,320.79

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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.