Home / 617,150.85-851,732.31-355,515.18

Finding the Fourth Proportional to 617,150.85, 851,732.31 and 355,515.18

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Solution

The fourth proportional to 617,150.85, 851,732.31 and 355,515.18 is: 490,647.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,150.85 : 851,732.31 = 355,515.18 : x
  2. Step 2: Convert to fraction form
    617,150.85/851,732.31 = 355,515.18/x
  3. Step 3: Cross multiply
    617,150.85x = 851,732.31 × 355,515.18
  4. Step 4: Simplify right side
    617,150.85x = 302,803,765,501.47
  5. Step 5: Solve for x
    x = 302,803,765,501.47/617,150.85
  6. Step 6: Final answer
    x = 490,647.90

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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.