Home / 1,930,507.40-2,664,420-1,071,343.64

Finding the Fourth Proportional to 1,930,507.40, 2,664,420 and 1,071,343.64

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Solution

The fourth proportional to 1,930,507.40, 2,664,420 and 1,071,343.64 is: 1,478,631.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930,507.40 : 2,664,420 = 1,071,343.64 : x
  2. Step 2: Convert to fraction form
    1,930,507.40/2,664,420 = 1,071,343.64/x
  3. Step 3: Cross multiply
    1,930,507.40x = 2,664,420 × 1,071,343.64
  4. Step 4: Simplify right side
    1,930,507.40x = 2,854,509,421,288.80
  5. Step 5: Solve for x
    x = 2,854,509,421,288.80/1,930,507.40
  6. Step 6: Final answer
    x = 1,478,631.69

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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.