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Finding the Fourth Proportional to 520,930.12, 785,299.50 and 486,209.94

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Solution

The fourth proportional to 520,930.12, 785,299.50 and 486,209.94 is: 732,959.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,930.12 : 785,299.50 = 486,209.94 : x
  2. Step 2: Convert to fraction form
    520,930.12/785,299.50 = 486,209.94/x
  3. Step 3: Cross multiply
    520,930.12x = 785,299.50 × 486,209.94
  4. Step 4: Simplify right side
    520,930.12x = 381,820,422,777.03
  5. Step 5: Solve for x
    x = 381,820,422,777.03/520,930.12
  6. Step 6: Final answer
    x = 732,959.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.