Home / 1,211,192,629.88-1,671,756,818.11-788,858,709.20

Finding the Fourth Proportional to 1,211,192,629.88, 1,671,756,818.11 and 788,858,709.20

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Solution

The fourth proportional to 1,211,192,629.88, 1,671,756,818.11 and 788,858,709.20 is: 1,088,827,568.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,192,629.88 : 1,671,756,818.11 = 788,858,709.20 : x
  2. Step 2: Convert to fraction form
    1,211,192,629.88/1,671,756,818.11 = 788,858,709.20/x
  3. Step 3: Cross multiply
    1,211,192,629.88x = 1,671,756,818.11 × 788,858,709.20
  4. Step 4: Simplify right side
    1,211,192,629.88x = 1,318,779,925,630,553,856
  5. Step 5: Solve for x
    x = 1,318,779,925,630,553,856/1,211,192,629.88
  6. Step 6: Final answer
    x = 1,088,827,568.05

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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.