Home / 1,139,300.80-1,572,204-629,985.76

Finding the Fourth Proportional to 1,139,300.80, 1,572,204 and 629,985.76

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Solution

The fourth proportional to 1,139,300.80, 1,572,204 and 629,985.76 is: 869,363.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,300.80 : 1,572,204 = 629,985.76 : x
  2. Step 2: Convert to fraction form
    1,139,300.80/1,572,204 = 629,985.76/x
  3. Step 3: Cross multiply
    1,139,300.80x = 1,572,204 × 629,985.76
  4. Step 4: Simplify right side
    1,139,300.80x = 990,466,131,815.04
  5. Step 5: Solve for x
    x = 990,466,131,815.04/1,139,300.80
  6. Step 6: Final answer
    x = 869,363.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.