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Finding the Fourth Proportional to 415,619.32, 623,429 and 333,038.20

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Solution

The fourth proportional to 415,619.32, 623,429 and 333,038.20 is: 499,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,619.32 : 623,429 = 333,038.20 : x
  2. Step 2: Convert to fraction form
    415,619.32/623,429 = 333,038.20/x
  3. Step 3: Cross multiply
    415,619.32x = 623,429 × 333,038.20
  4. Step 4: Simplify right side
    415,619.32x = 207,625,671,987.80
  5. Step 5: Solve for x
    x = 207,625,671,987.80/415,619.32
  6. Step 6: Final answer
    x = 499,557.32

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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.