Home / 1,325,000.70-1,987,501.05-1,059,280.20

Finding the Fourth Proportional to 1,325,000.70, 1,987,501.05 and 1,059,280.20

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Solution

The fourth proportional to 1,325,000.70, 1,987,501.05 and 1,059,280.20 is: 1,588,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,000.70 : 1,987,501.05 = 1,059,280.20 : x
  2. Step 2: Convert to fraction form
    1,325,000.70/1,987,501.05 = 1,059,280.20/x
  3. Step 3: Cross multiply
    1,325,000.70x = 1,987,501.05 × 1,059,280.20
  4. Step 4: Simplify right side
    1,325,000.70x = 2,105,320,509,744.21
  5. Step 5: Solve for x
    x = 2,105,320,509,744.21/1,325,000.70
  6. Step 6: Final answer
    x = 1,588,920.30

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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.