Home / 1,139,219.51-1,572,118.88-642,463.92

Finding the Fourth Proportional to 1,139,219.51, 1,572,118.88 and 642,463.92

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Solution

The fourth proportional to 1,139,219.51, 1,572,118.88 and 642,463.92 is: 886,597.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,219.51 : 1,572,118.88 = 642,463.92 : x
  2. Step 2: Convert to fraction form
    1,139,219.51/1,572,118.88 = 642,463.92/x
  3. Step 3: Cross multiply
    1,139,219.51x = 1,572,118.88 × 642,463.92
  4. Step 4: Simplify right side
    1,139,219.51x = 1,010,029,655,138.49
  5. Step 5: Solve for x
    x = 1,010,029,655,138.49/1,139,219.51
  6. Step 6: Final answer
    x = 886,597.93

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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.