Home / 743,154.36-1,025,518.74-420,866.80

Finding the Fourth Proportional to 743,154.36, 1,025,518.74 and 420,866.80

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Solution

The fourth proportional to 743,154.36, 1,025,518.74 and 420,866.80 is: 580,776.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,154.36 : 1,025,518.74 = 420,866.80 : x
  2. Step 2: Convert to fraction form
    743,154.36/1,025,518.74 = 420,866.80/x
  3. Step 3: Cross multiply
    743,154.36x = 1,025,518.74 × 420,866.80
  4. Step 4: Simplify right side
    743,154.36x = 431,606,786,301.79
  5. Step 5: Solve for x
    x = 431,606,786,301.79/743,154.36
  6. Step 6: Final answer
    x = 580,776.77

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1.5x scale

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.