Home / 1,139,239.38-1,572,146.22-642,483.80

Finding the Fourth Proportional to 1,139,239.38, 1,572,146.22 and 642,483.80

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Solution

The fourth proportional to 1,139,239.38, 1,572,146.22 and 642,483.80 is: 886,625.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,239.38 : 1,572,146.22 = 642,483.80 : x
  2. Step 2: Convert to fraction form
    1,139,239.38/1,572,146.22 = 642,483.80/x
  3. Step 3: Cross multiply
    1,139,239.38x = 1,572,146.22 × 642,483.80
  4. Step 4: Simplify right side
    1,139,239.38x = 1,010,078,477,581.24
  5. Step 5: Solve for x
    x = 1,010,078,477,581.24/1,139,239.38
  6. Step 6: Final answer
    x = 886,625.32

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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.