Home / 684,221.10-1,025,640.45-310,512.30

Finding the Fourth Proportional to 684,221.10, 1,025,640.45 and 310,512.30

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Solution

The fourth proportional to 684,221.10, 1,025,640.45 and 310,512.30 is: 465,454.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,221.10 : 1,025,640.45 = 310,512.30 : x
  2. Step 2: Convert to fraction form
    684,221.10/1,025,640.45 = 310,512.30/x
  3. Step 3: Cross multiply
    684,221.10x = 1,025,640.45 × 310,512.30
  4. Step 4: Simplify right side
    684,221.10x = 318,473,975,102.54
  5. Step 5: Solve for x
    x = 318,473,975,102.54/684,221.10
  6. Step 6: Final answer
    x = 465,454.77

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Double scale
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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.