Home / 945,204,821.55-1,304,289,417.51-521,790,987.87

Finding the Fourth Proportional to 945,204,821.55, 1,304,289,417.51 and 521,790,987.87

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Solution

The fourth proportional to 945,204,821.55, 1,304,289,417.51 and 521,790,987.87 is: 720,020,093.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,204,821.55 : 1,304,289,417.51 = 521,790,987.87 : x
  2. Step 2: Convert to fraction form
    945,204,821.55/1,304,289,417.51 = 521,790,987.87/x
  3. Step 3: Cross multiply
    945,204,821.55x = 1,304,289,417.51 × 521,790,987.87
  4. Step 4: Simplify right side
    945,204,821.55x = 680,566,463,630,929,792
  5. Step 5: Solve for x
    x = 680,566,463,630,929,792/945,204,821.55
  6. Step 6: Final answer
    x = 720,020,093.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.