Home / 459,318.40-687,422.40-403,331.20

Finding the Fourth Proportional to 459,318.40, 687,422.40 and 403,331.20

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Solution

The fourth proportional to 459,318.40, 687,422.40 and 403,331.20 is: 603,631.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,318.40 : 687,422.40 = 403,331.20 : x
  2. Step 2: Convert to fraction form
    459,318.40/687,422.40 = 403,331.20/x
  3. Step 3: Cross multiply
    459,318.40x = 687,422.40 × 403,331.20
  4. Step 4: Simplify right side
    459,318.40x = 277,258,901,498.88
  5. Step 5: Solve for x
    x = 277,258,901,498.88/459,318.40
  6. Step 6: Final answer
    x = 603,631.17

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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.