Home / 642,566.30-886,746.64-356,091.14

Finding the Fourth Proportional to 642,566.30, 886,746.64 and 356,091.14

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Solution

The fourth proportional to 642,566.30, 886,746.64 and 356,091.14 is: 491,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,566.30 : 886,746.64 = 356,091.14 : x
  2. Step 2: Convert to fraction form
    642,566.30/886,746.64 = 356,091.14/x
  3. Step 3: Cross multiply
    642,566.30x = 886,746.64 × 356,091.14
  4. Step 4: Simplify right side
    642,566.30x = 315,762,621,928.77
  5. Step 5: Solve for x
    x = 315,762,621,928.77/642,566.30
  6. Step 6: Final answer
    x = 491,408.62

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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.