Home / 393,985,000.10-590,977,500.15-212,586,472.10

Finding the Fourth Proportional to 393,985,000.10, 590,977,500.15 and 212,586,472.10

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Solution

The fourth proportional to 393,985,000.10, 590,977,500.15 and 212,586,472.10 is: 318,879,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,985,000.10 : 590,977,500.15 = 212,586,472.10 : x
  2. Step 2: Convert to fraction form
    393,985,000.10/590,977,500.15 = 212,586,472.10/x
  3. Step 3: Cross multiply
    393,985,000.10x = 590,977,500.15 × 212,586,472.10
  4. Step 4: Simplify right side
    393,985,000.10x = 125,633,821,847,365,712
  5. Step 5: Solve for x
    x = 125,633,821,847,365,712/393,985,000.10
  6. Step 6: Final answer
    x = 318,879,708.15

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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.