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Finding the Fourth Proportional to 863,592,648.80, 1,295,388,973.20 and 426,960,723.20

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Solution

The fourth proportional to 863,592,648.80, 1,295,388,973.20 and 426,960,723.20 is: 640,441,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,592,648.80 : 1,295,388,973.20 = 426,960,723.20 : x
  2. Step 2: Convert to fraction form
    863,592,648.80/1,295,388,973.20 = 426,960,723.20/x
  3. Step 3: Cross multiply
    863,592,648.80x = 1,295,388,973.20 × 426,960,723.20
  4. Step 4: Simplify right side
    863,592,648.80x = 553,080,212,822,777,408
  5. Step 5: Solve for x
    x = 553,080,212,822,777,408/863,592,648.80
  6. Step 6: Final answer
    x = 640,441,084.80

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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.