Home / 1,402,171.10-2,099,109.45-1,320,148.70

Finding the Fourth Proportional to 1,402,171.10, 2,099,109.45 and 1,320,148.70

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Solution

The fourth proportional to 1,402,171.10, 2,099,109.45 and 1,320,148.70 is: 1,976,318.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402,171.10 : 2,099,109.45 = 1,320,148.70 : x
  2. Step 2: Convert to fraction form
    1,402,171.10/2,099,109.45 = 1,320,148.70/x
  3. Step 3: Cross multiply
    1,402,171.10x = 2,099,109.45 × 1,320,148.70
  4. Step 4: Simplify right side
    1,402,171.10x = 2,771,136,611,575.22
  5. Step 5: Solve for x
    x = 2,771,136,611,575.22/1,402,171.10
  6. Step 6: Final answer
    x = 1,976,318.45

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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.