Home / 1,313,285.76-1,969,987.60-402,401.36

Finding the Fourth Proportional to 1,313,285.76, 1,969,987.60 and 402,401.36

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Solution

The fourth proportional to 1,313,285.76, 1,969,987.60 and 402,401.36 is: 603,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,285.76 : 1,969,987.60 = 402,401.36 : x
  2. Step 2: Convert to fraction form
    1,313,285.76/1,969,987.60 = 402,401.36/x
  3. Step 3: Cross multiply
    1,313,285.76x = 1,969,987.60 × 402,401.36
  4. Step 4: Simplify right side
    1,313,285.76x = 792,725,689,423.14
  5. Step 5: Solve for x
    x = 792,725,689,423.14/1,313,285.76
  6. Step 6: Final answer
    x = 603,620.11

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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.