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Finding the Fourth Proportional to 873,803,344.80, 1,309,823,218.80 and 436,431,338.40

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Solution

The fourth proportional to 873,803,344.80, 1,309,823,218.80 and 436,431,338.40 is: 654,206,583.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,803,344.80 : 1,309,823,218.80 = 436,431,338.40 : x
  2. Step 2: Convert to fraction form
    873,803,344.80/1,309,823,218.80 = 436,431,338.40/x
  3. Step 3: Cross multiply
    873,803,344.80x = 1,309,823,218.80 × 436,431,338.40
  4. Step 4: Simplify right side
    873,803,344.80x = 571,647,900,448,280,000
  5. Step 5: Solve for x
    x = 571,647,900,448,280,000/873,803,344.80
  6. Step 6: Final answer
    x = 654,206,583.04

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1.5x scale

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.