Home / 5,421,973.21-8,132,978.82-1,378,461.46

Finding the Fourth Proportional to 5,421,973.21, 8,132,978.82 and 1,378,461.46

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Solution

The fourth proportional to 5,421,973.21, 8,132,978.82 and 1,378,461.46 is: 2,067,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421,973.21 : 8,132,978.82 = 1,378,461.46 : x
  2. Step 2: Convert to fraction form
    5,421,973.21/8,132,978.82 = 1,378,461.46/x
  3. Step 3: Cross multiply
    5,421,973.21x = 8,132,978.82 × 1,378,461.46
  4. Step 4: Simplify right side
    5,421,973.21x = 11,210,997,834,587.68
  5. Step 5: Solve for x
    x = 11,210,997,834,587.68/5,421,973.21
  6. Step 6: Final answer
    x = 2,067,697.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.