Home / 684,976.40-1,027,445.40-310,998.80

Finding the Fourth Proportional to 684,976.40, 1,027,445.40 and 310,998.80

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Solution

The fourth proportional to 684,976.40, 1,027,445.40 and 310,998.80 is: 466,489.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,976.40 : 1,027,445.40 = 310,998.80 : x
  2. Step 2: Convert to fraction form
    684,976.40/1,027,445.40 = 310,998.80/x
  3. Step 3: Cross multiply
    684,976.40x = 1,027,445.40 × 310,998.80
  4. Step 4: Simplify right side
    684,976.40x = 319,534,286,465.52
  5. Step 5: Solve for x
    x = 319,534,286,465.52/684,976.40
  6. Step 6: Final answer
    x = 466,489.48

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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.