Home / 1,007,742.12-1,390,620.30-555,033.12

Finding the Fourth Proportional to 1,007,742.12, 1,390,620.30 and 555,033.12

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Solution

The fourth proportional to 1,007,742.12, 1,390,620.30 and 555,033.12 is: 765,910.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,742.12 : 1,390,620.30 = 555,033.12 : x
  2. Step 2: Convert to fraction form
    1,007,742.12/1,390,620.30 = 555,033.12/x
  3. Step 3: Cross multiply
    1,007,742.12x = 1,390,620.30 × 555,033.12
  4. Step 4: Simplify right side
    1,007,742.12x = 771,840,323,844.34
  5. Step 5: Solve for x
    x = 771,840,323,844.34/1,007,742.12
  6. Step 6: Final answer
    x = 765,910.55

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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.