Home / 431,029,506.80-646,544,260.20-258,700,905.20

Finding the Fourth Proportional to 431,029,506.80, 646,544,260.20 and 258,700,905.20

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Solution

The fourth proportional to 431,029,506.80, 646,544,260.20 and 258,700,905.20 is: 388,051,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,029,506.80 : 646,544,260.20 = 258,700,905.20 : x
  2. Step 2: Convert to fraction form
    431,029,506.80/646,544,260.20 = 258,700,905.20/x
  3. Step 3: Cross multiply
    431,029,506.80x = 646,544,260.20 × 258,700,905.20
  4. Step 4: Simplify right side
    431,029,506.80x = 167,261,585,365,604,352
  5. Step 5: Solve for x
    x = 167,261,585,365,604,352/431,029,506.80
  6. Step 6: Final answer
    x = 388,051,357.80

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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.