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Finding the Fourth Proportional to 645,173,859.40, 967,760,789.10 and 645,173,859.40

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Solution

The fourth proportional to 645,173,859.40, 967,760,789.10 and 645,173,859.40 is: 967,760,789.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,173,859.40 : 967,760,789.10 = 645,173,859.40 : x
  2. Step 2: Convert to fraction form
    645,173,859.40/967,760,789.10 = 645,173,859.40/x
  3. Step 3: Cross multiply
    645,173,859.40x = 967,760,789.10 × 645,173,859.40
  4. Step 4: Simplify right side
    645,173,859.40x = 624,373,963,279,636,480
  5. Step 5: Solve for x
    x = 624,373,963,279,636,480/645,173,859.40
  6. Step 6: Final answer
    x = 967,760,789.10

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1.5x scale

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.