Home / 639,528,506.78-959,384,268.90-196,908,637.12

Finding the Fourth Proportional to 639,528,506.78, 959,384,268.90 and 196,908,637.12

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Solution

The fourth proportional to 639,528,506.78, 959,384,268.90 and 196,908,637.12 is: 295,391,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,528,506.78 : 959,384,268.90 = 196,908,637.12 : x
  2. Step 2: Convert to fraction form
    639,528,506.78/959,384,268.90 = 196,908,637.12/x
  3. Step 3: Cross multiply
    639,528,506.78x = 959,384,268.90 × 196,908,637.12
  4. Step 4: Simplify right side
    639,528,506.78x = 188,911,048,863,466,592
  5. Step 5: Solve for x
    x = 188,911,048,863,466,592/639,528,506.78
  6. Step 6: Final answer
    x = 295,391,130.90

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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.