Home / 1,139,302.80-1,572,206.76-629,987.76

Finding the Fourth Proportional to 1,139,302.80, 1,572,206.76 and 629,987.76

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Solution

The fourth proportional to 1,139,302.80, 1,572,206.76 and 629,987.76 is: 869,365.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,302.80 : 1,572,206.76 = 629,987.76 : x
  2. Step 2: Convert to fraction form
    1,139,302.80/1,572,206.76 = 629,987.76/x
  3. Step 3: Cross multiply
    1,139,302.80x = 1,572,206.76 × 629,987.76
  4. Step 4: Simplify right side
    1,139,302.80x = 990,471,014,989.26
  5. Step 5: Solve for x
    x = 990,471,014,989.26/1,139,302.80
  6. Step 6: Final answer
    x = 869,365.91

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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.