Home / 1,223,923,536.72-1,688,965,199.82-666,994,626.36

Finding the Fourth Proportional to 1,223,923,536.72, 1,688,965,199.82 and 666,994,626.36

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Solution

The fourth proportional to 1,223,923,536.72, 1,688,965,199.82 and 666,994,626.36 is: 920,425,728.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,923,536.72 : 1,688,965,199.82 = 666,994,626.36 : x
  2. Step 2: Convert to fraction form
    1,223,923,536.72/1,688,965,199.82 = 666,994,626.36/x
  3. Step 3: Cross multiply
    1,223,923,536.72x = 1,688,965,199.82 × 666,994,626.36
  4. Step 4: Simplify right side
    1,223,923,536.72x = 1,126,530,712,388,983,680
  5. Step 5: Solve for x
    x = 1,126,530,712,388,983,680/1,223,923,536.72
  6. Step 6: Final answer
    x = 920,425,728.07

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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.