Home / 1,120,620,949.32-1,683,482,340.72-810,684,558.12

Finding the Fourth Proportional to 1,120,620,949.32, 1,683,482,340.72 and 810,684,558.12

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Solution

The fourth proportional to 1,120,620,949.32, 1,683,482,340.72 and 810,684,558.12 is: 1,217,872,232.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,620,949.32 : 1,683,482,340.72 = 810,684,558.12 : x
  2. Step 2: Convert to fraction form
    1,120,620,949.32/1,683,482,340.72 = 810,684,558.12/x
  3. Step 3: Cross multiply
    1,120,620,949.32x = 1,683,482,340.72 × 810,684,558.12
  4. Step 4: Simplify right side
    1,120,620,949.32x = 1,364,773,137,489,416,448
  5. Step 5: Solve for x
    x = 1,364,773,137,489,416,448/1,120,620,949.32
  6. Step 6: Final answer
    x = 1,217,872,232.64

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Double scale
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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.