Home / 498,314.15-687,434.34-326,156.32

Finding the Fourth Proportional to 498,314.15, 687,434.34 and 326,156.32

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Solution

The fourth proportional to 498,314.15, 687,434.34 and 326,156.32 is: 449,939.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,314.15 : 687,434.34 = 326,156.32 : x
  2. Step 2: Convert to fraction form
    498,314.15/687,434.34 = 326,156.32/x
  3. Step 3: Cross multiply
    498,314.15x = 687,434.34 × 326,156.32
  4. Step 4: Simplify right side
    498,314.15x = 224,211,052,857.44
  5. Step 5: Solve for x
    x = 224,211,052,857.44/498,314.15
  6. Step 6: Final answer
    x = 449,939.17

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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.