Home / 393,156,985.30-589,735,477.95-385,504,234.90

Finding the Fourth Proportional to 393,156,985.30, 589,735,477.95 and 385,504,234.90

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Solution

The fourth proportional to 393,156,985.30, 589,735,477.95 and 385,504,234.90 is: 578,256,352.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,156,985.30 : 589,735,477.95 = 385,504,234.90 : x
  2. Step 2: Convert to fraction form
    393,156,985.30/589,735,477.95 = 385,504,234.90/x
  3. Step 3: Cross multiply
    393,156,985.30x = 589,735,477.95 × 385,504,234.90
  4. Step 4: Simplify right side
    393,156,985.30x = 227,345,524,220,500,576
  5. Step 5: Solve for x
    x = 227,345,524,220,500,576/393,156,985.30
  6. Step 6: Final answer
    x = 578,256,352.35

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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.