Home / 1,224,271,709.20-1,689,481,206.84-667,342,536.40

Finding the Fourth Proportional to 1,224,271,709.20, 1,689,481,206.84 and 667,342,536.40

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Solution

The fourth proportional to 1,224,271,709.20, 1,689,481,206.84 and 667,342,536.40 is: 920,925,204.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,271,709.20 : 1,689,481,206.84 = 667,342,536.40 : x
  2. Step 2: Convert to fraction form
    1,224,271,709.20/1,689,481,206.84 = 667,342,536.40/x
  3. Step 3: Cross multiply
    1,224,271,709.20x = 1,689,481,206.84 × 667,342,536.40
  4. Step 4: Simplify right side
    1,224,271,709.20x = 1,127,462,673,772,738,560
  5. Step 5: Solve for x
    x = 1,127,462,673,772,738,560/1,224,271,709.20
  6. Step 6: Final answer
    x = 920,925,204.18

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.