Home / 1,328,585,827.20-1,992,878,740.80-638,326,636.80

Finding the Fourth Proportional to 1,328,585,827.20, 1,992,878,740.80 and 638,326,636.80

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Solution

The fourth proportional to 1,328,585,827.20, 1,992,878,740.80 and 638,326,636.80 is: 957,489,955.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,585,827.20 : 1,992,878,740.80 = 638,326,636.80 : x
  2. Step 2: Convert to fraction form
    1,328,585,827.20/1,992,878,740.80 = 638,326,636.80/x
  3. Step 3: Cross multiply
    1,328,585,827.20x = 1,992,878,740.80 × 638,326,636.80
  4. Step 4: Simplify right side
    1,328,585,827.20x = 1,272,107,584,165,082,880
  5. Step 5: Solve for x
    x = 1,272,107,584,165,082,880/1,328,585,827.20
  6. Step 6: Final answer
    x = 957,489,955.20

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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.