Home / 851,378.65-1,174,911.72-464,190.92

Finding the Fourth Proportional to 851,378.65, 1,174,911.72 and 464,190.92

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Solution

The fourth proportional to 851,378.65, 1,174,911.72 and 464,190.92 is: 640,588.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,378.65 : 1,174,911.72 = 464,190.92 : x
  2. Step 2: Convert to fraction form
    851,378.65/1,174,911.72 = 464,190.92/x
  3. Step 3: Cross multiply
    851,378.65x = 1,174,911.72 × 464,190.92
  4. Step 4: Simplify right side
    851,378.65x = 545,383,349,904.63
  5. Step 5: Solve for x
    x = 545,383,349,904.63/851,378.65
  6. Step 6: Final answer
    x = 640,588.47

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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.