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Finding the Fourth Proportional to 456,842.80, 685,307.40 and 124,418.80

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Solution

The fourth proportional to 456,842.80, 685,307.40 and 124,418.80 is: 186,639.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,842.80 : 685,307.40 = 124,418.80 : x
  2. Step 2: Convert to fraction form
    456,842.80/685,307.40 = 124,418.80/x
  3. Step 3: Cross multiply
    456,842.80x = 685,307.40 × 124,418.80
  4. Step 4: Simplify right side
    456,842.80x = 85,265,124,339.12
  5. Step 5: Solve for x
    x = 85,265,124,339.12/456,842.80
  6. Step 6: Final answer
    x = 186,639.97

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1.5x scale

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.