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Finding the Fourth Proportional to 402,984.43, 604,454.76 and 122,479.81

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Solution

The fourth proportional to 402,984.43, 604,454.76 and 122,479.81 is: 183,713.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,984.43 : 604,454.76 = 122,479.81 : x
  2. Step 2: Convert to fraction form
    402,984.43/604,454.76 = 122,479.81/x
  3. Step 3: Cross multiply
    402,984.43x = 604,454.76 × 122,479.81
  4. Step 4: Simplify right side
    402,984.43x = 74,033,504,158.40
  5. Step 5: Solve for x
    x = 74,033,504,158.40/402,984.43
  6. Step 6: Final answer
    x = 183,713.06

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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.