Home / 651,504,911.20-977,257,366.80-393,012,008.80

Finding the Fourth Proportional to 651,504,911.20, 977,257,366.80 and 393,012,008.80

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Solution

The fourth proportional to 651,504,911.20, 977,257,366.80 and 393,012,008.80 is: 589,518,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,504,911.20 : 977,257,366.80 = 393,012,008.80 : x
  2. Step 2: Convert to fraction form
    651,504,911.20/977,257,366.80 = 393,012,008.80/x
  3. Step 3: Cross multiply
    651,504,911.20x = 977,257,366.80 × 393,012,008.80
  4. Step 4: Simplify right side
    651,504,911.20x = 384,073,880,840,666,432
  5. Step 5: Solve for x
    x = 384,073,880,840,666,432/651,504,911.20
  6. Step 6: Final answer
    x = 589,518,013.20

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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.