Home / 1,120,620,993.92-1,683,482,407.52-810,684,602.72

Finding the Fourth Proportional to 1,120,620,993.92, 1,683,482,407.52 and 810,684,602.72

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Solution

The fourth proportional to 1,120,620,993.92, 1,683,482,407.52 and 810,684,602.72 is: 1,217,872,299.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,620,993.92 : 1,683,482,407.52 = 810,684,602.72 : x
  2. Step 2: Convert to fraction form
    1,120,620,993.92/1,683,482,407.52 = 810,684,602.72/x
  3. Step 3: Cross multiply
    1,120,620,993.92x = 1,683,482,407.52 × 810,684,602.72
  4. Step 4: Simplify right side
    1,120,620,993.92x = 1,364,773,266,726,460,416
  5. Step 5: Solve for x
    x = 1,364,773,266,726,460,416/1,120,620,993.92
  6. Step 6: Final answer
    x = 1,217,872,299.49

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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.