Home / 432,021.20-646,897.80-304,975.40

Finding the Fourth Proportional to 432,021.20, 646,897.80 and 304,975.40

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Solution

The fourth proportional to 432,021.20, 646,897.80 and 304,975.40 is: 456,662.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,021.20 : 646,897.80 = 304,975.40 : x
  2. Step 2: Convert to fraction form
    432,021.20/646,897.80 = 304,975.40/x
  3. Step 3: Cross multiply
    432,021.20x = 646,897.80 × 304,975.40
  4. Step 4: Simplify right side
    432,021.20x = 197,287,915,314.12
  5. Step 5: Solve for x
    x = 197,287,915,314.12/432,021.20
  6. Step 6: Final answer
    x = 456,662.58

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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.