Home / 431,208,653.20-646,812,979.80-172,295,846.80

Finding the Fourth Proportional to 431,208,653.20, 646,812,979.80 and 172,295,846.80

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Solution

The fourth proportional to 431,208,653.20, 646,812,979.80 and 172,295,846.80 is: 258,443,770.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,208,653.20 : 646,812,979.80 = 172,295,846.80 : x
  2. Step 2: Convert to fraction form
    431,208,653.20/646,812,979.80 = 172,295,846.80/x
  3. Step 3: Cross multiply
    431,208,653.20x = 646,812,979.80 × 172,295,846.80
  4. Step 4: Simplify right side
    431,208,653.20x = 111,443,190,075,872,288
  5. Step 5: Solve for x
    x = 111,443,190,075,872,288/431,208,653.20
  6. Step 6: Final answer
    x = 258,443,770.20

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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.