Home / 1,121,105.10-1,679,129.09-520,802.92

Finding the Fourth Proportional to 1,121,105.10, 1,679,129.09 and 520,802.92

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Solution

The fourth proportional to 1,121,105.10, 1,679,129.09 and 520,802.92 is: 780,029.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,105.10 : 1,679,129.09 = 520,802.92 : x
  2. Step 2: Convert to fraction form
    1,121,105.10/1,679,129.09 = 520,802.92/x
  3. Step 3: Cross multiply
    1,121,105.10x = 1,679,129.09 × 520,802.92
  4. Step 4: Simplify right side
    1,121,105.10x = 874,495,325,131.75
  5. Step 5: Solve for x
    x = 874,495,325,131.75/1,121,105.10
  6. Step 6: Final answer
    x = 780,029.74

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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.