Home / 664,851,000.30-997,276,500.45-389,351,985.90

Finding the Fourth Proportional to 664,851,000.30, 997,276,500.45 and 389,351,985.90

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Solution

The fourth proportional to 664,851,000.30, 997,276,500.45 and 389,351,985.90 is: 584,027,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,851,000.30 : 997,276,500.45 = 389,351,985.90 : x
  2. Step 2: Convert to fraction form
    664,851,000.30/997,276,500.45 = 389,351,985.90/x
  3. Step 3: Cross multiply
    664,851,000.30x = 997,276,500.45 × 389,351,985.90
  4. Step 4: Simplify right side
    664,851,000.30x = 388,291,585,941,609,728
  5. Step 5: Solve for x
    x = 388,291,585,941,609,728/664,851,000.30
  6. Step 6: Final answer
    x = 584,027,978.85

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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.