Home / 1,105,401.40-1,658,976.90-431,805.40

Finding the Fourth Proportional to 1,105,401.40, 1,658,976.90 and 431,805.40

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Solution

The fourth proportional to 1,105,401.40, 1,658,976.90 and 431,805.40 is: 648,049.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,401.40 : 1,658,976.90 = 431,805.40 : x
  2. Step 2: Convert to fraction form
    1,105,401.40/1,658,976.90 = 431,805.40/x
  3. Step 3: Cross multiply
    1,105,401.40x = 1,658,976.90 × 431,805.40
  4. Step 4: Simplify right side
    1,105,401.40x = 716,355,183,895.26
  5. Step 5: Solve for x
    x = 716,355,183,895.26/1,105,401.40
  6. Step 6: Final answer
    x = 648,049.83

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1.5x scale

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.