Home / 1,329,919,821.20-1,995,068,688.60-409,700,205.20

Finding the Fourth Proportional to 1,329,919,821.20, 1,995,068,688.60 and 409,700,205.20

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Solution

The fourth proportional to 1,329,919,821.20, 1,995,068,688.60 and 409,700,205.20 is: 614,608,518.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,919,821.20 : 1,995,068,688.60 = 409,700,205.20 : x
  2. Step 2: Convert to fraction form
    1,329,919,821.20/1,995,068,688.60 = 409,700,205.20/x
  3. Step 3: Cross multiply
    1,329,919,821.20x = 1,995,068,688.60 × 409,700,205.20
  4. Step 4: Simplify right side
    1,329,919,821.20x = 817,380,051,107,514,880
  5. Step 5: Solve for x
    x = 817,380,051,107,514,880/1,329,919,821.20
  6. Step 6: Final answer
    x = 614,608,518.56

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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.