Home / 1,405,680.12-1,939,829.72-761,098.32

Finding the Fourth Proportional to 1,405,680.12, 1,939,829.72 and 761,098.32

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Solution

The fourth proportional to 1,405,680.12, 1,939,829.72 and 761,098.32 is: 1,050,310.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,680.12 : 1,939,829.72 = 761,098.32 : x
  2. Step 2: Convert to fraction form
    1,405,680.12/1,939,829.72 = 761,098.32/x
  3. Step 3: Cross multiply
    1,405,680.12x = 1,939,829.72 × 761,098.32
  4. Step 4: Simplify right side
    1,405,680.12x = 1,476,401,140,978.07
  5. Step 5: Solve for x
    x = 1,476,401,140,978.07/1,405,680.12
  6. Step 6: Final answer
    x = 1,050,310.89

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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.