Home / 523,631.80-785,447.70-257,911.30

Finding the Fourth Proportional to 523,631.80, 785,447.70 and 257,911.30

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Solution

The fourth proportional to 523,631.80, 785,447.70 and 257,911.30 is: 386,866.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,631.80 : 785,447.70 = 257,911.30 : x
  2. Step 2: Convert to fraction form
    523,631.80/785,447.70 = 257,911.30/x
  3. Step 3: Cross multiply
    523,631.80x = 785,447.70 × 257,911.30
  4. Step 4: Simplify right side
    523,631.80x = 202,575,837,389.01
  5. Step 5: Solve for x
    x = 202,575,837,389.01/523,631.80
  6. Step 6: Final answer
    x = 386,866.95

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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.