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Finding the Fourth Proportional to 617,240.86, 851,772.81 and 345,313.51

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Solution

The fourth proportional to 617,240.86, 851,772.81 and 345,313.51 is: 476,521.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,240.86 : 851,772.81 = 345,313.51 : x
  2. Step 2: Convert to fraction form
    617,240.86/851,772.81 = 345,313.51/x
  3. Step 3: Cross multiply
    617,240.86x = 851,772.81 × 345,313.51
  4. Step 4: Simplify right side
    617,240.86x = 294,128,658,743.66
  5. Step 5: Solve for x
    x = 294,128,658,743.66/617,240.86
  6. Step 6: Final answer
    x = 476,521.69

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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.