Home / 1,320,496.11-1,980,875.43-479,113.47

Finding the Fourth Proportional to 1,320,496.11, 1,980,875.43 and 479,113.47

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Solution

The fourth proportional to 1,320,496.11, 1,980,875.43 and 479,113.47 is: 718,717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,496.11 : 1,980,875.43 = 479,113.47 : x
  2. Step 2: Convert to fraction form
    1,320,496.11/1,980,875.43 = 479,113.47/x
  3. Step 3: Cross multiply
    1,320,496.11x = 1,980,875.43 × 479,113.47
  4. Step 4: Simplify right side
    1,320,496.11x = 949,064,100,905.04
  5. Step 5: Solve for x
    x = 949,064,100,905.04/1,320,496.11
  6. Step 6: Final answer
    x = 718,717.83

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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.