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Finding the Fourth Proportional to 617,823.28, 852,342.72 and 375,911.92

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Solution

The fourth proportional to 617,823.28, 852,342.72 and 375,911.92 is: 518,604.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,823.28 : 852,342.72 = 375,911.92 : x
  2. Step 2: Convert to fraction form
    617,823.28/852,342.72 = 375,911.92/x
  3. Step 3: Cross multiply
    617,823.28x = 852,342.72 × 375,911.92
  4. Step 4: Simplify right side
    617,823.28x = 320,405,788,373.22
  5. Step 5: Solve for x
    x = 320,405,788,373.22/617,823.28
  6. Step 6: Final answer
    x = 518,604.27

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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.