Home / 850,937.70-1,276,406.55-431,033.70

Finding the Fourth Proportional to 850,937.70, 1,276,406.55 and 431,033.70

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Solution

The fourth proportional to 850,937.70, 1,276,406.55 and 431,033.70 is: 646,550.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,937.70 : 1,276,406.55 = 431,033.70 : x
  2. Step 2: Convert to fraction form
    850,937.70/1,276,406.55 = 431,033.70/x
  3. Step 3: Cross multiply
    850,937.70x = 1,276,406.55 × 431,033.70
  4. Step 4: Simplify right side
    850,937.70x = 550,174,237,950.74
  5. Step 5: Solve for x
    x = 550,174,237,950.74/850,937.70
  6. Step 6: Final answer
    x = 646,550.55

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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.