Home / 485,093.40-727,640.10-298,210.20

Finding the Fourth Proportional to 485,093.40, 727,640.10 and 298,210.20

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Solution

The fourth proportional to 485,093.40, 727,640.10 and 298,210.20 is: 447,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,093.40 : 727,640.10 = 298,210.20 : x
  2. Step 2: Convert to fraction form
    485,093.40/727,640.10 = 298,210.20/x
  3. Step 3: Cross multiply
    485,093.40x = 727,640.10 × 298,210.20
  4. Step 4: Simplify right side
    485,093.40x = 216,989,699,749.02
  5. Step 5: Solve for x
    x = 216,989,699,749.02/485,093.40
  6. Step 6: Final answer
    x = 447,315.30

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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.