Home / 442,211,640,329.45-663,383,784,469.55-155,319,130,479.43

Finding the Fourth Proportional to 442,211,640,329.45, 663,383,784,469.55 and 155,319,130,479.43

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Solution

The fourth proportional to 442,211,640,329.45, 663,383,784,469.55 and 155,319,130,479.43 is: 233,001,990,859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,211,640,329.45 : 663,383,784,469.55 = 155,319,130,479.43 : x
  2. Step 2: Convert to fraction form
    442,211,640,329.45/663,383,784,469.55 = 155,319,130,479.43/x
  3. Step 3: Cross multiply
    442,211,640,329.45x = 663,383,784,469.55 × 155,319,130,479.43
  4. Step 4: Simplify right side
    442,211,640,329.45x = 103,036,192,577,964,113,657,856
  5. Step 5: Solve for x
    x = 103,036,192,577,964,113,657,856/442,211,640,329.45
  6. Step 6: Final answer
    x = 233,001,990,859.40

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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.