Home / 490,985.10-677,548.77-284,262.21

Finding the Fourth Proportional to 490,985.10, 677,548.77 and 284,262.21

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Solution

The fourth proportional to 490,985.10, 677,548.77 and 284,262.21 is: 392,275.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,985.10 : 677,548.77 = 284,262.21 : x
  2. Step 2: Convert to fraction form
    490,985.10/677,548.77 = 284,262.21/x
  3. Step 3: Cross multiply
    490,985.10x = 677,548.77 × 284,262.21
  4. Step 4: Simplify right side
    490,985.10x = 192,601,510,742.98
  5. Step 5: Solve for x
    x = 192,601,510,742.98/490,985.10
  6. Step 6: Final answer
    x = 392,275.67

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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.