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Finding the Fourth Proportional to 559,404,000.40, 839,106,000.60 and 443,762,438.80

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Solution

The fourth proportional to 559,404,000.40, 839,106,000.60 and 443,762,438.80 is: 665,643,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,404,000.40 : 839,106,000.60 = 443,762,438.80 : x
  2. Step 2: Convert to fraction form
    559,404,000.40/839,106,000.60 = 443,762,438.80/x
  3. Step 3: Cross multiply
    559,404,000.40x = 839,106,000.60 × 443,762,438.80
  4. Step 4: Simplify right side
    559,404,000.40x = 372,363,725,237,970,304
  5. Step 5: Solve for x
    x = 372,363,725,237,970,304/559,404,000.40
  6. Step 6: Final answer
    x = 665,643,658.20

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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.