Home / 1,139,239.76-1,572,146.75-642,484.17

Finding the Fourth Proportional to 1,139,239.76, 1,572,146.75 and 642,484.17

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Solution

The fourth proportional to 1,139,239.76, 1,572,146.75 and 642,484.17 is: 886,625.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,239.76 : 1,572,146.75 = 642,484.17 : x
  2. Step 2: Convert to fraction form
    1,139,239.76/1,572,146.75 = 642,484.17/x
  3. Step 3: Cross multiply
    1,139,239.76x = 1,572,146.75 × 642,484.17
  4. Step 4: Simplify right side
    1,139,239.76x = 1,010,079,401,398.16
  5. Step 5: Solve for x
    x = 1,010,079,401,398.16/1,139,239.76
  6. Step 6: Final answer
    x = 886,625.84

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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.