Home / 1,121,010,709.40-1,681,516,064.10-772,332,269.30

Finding the Fourth Proportional to 1,121,010,709.40, 1,681,516,064.10 and 772,332,269.30

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Solution

The fourth proportional to 1,121,010,709.40, 1,681,516,064.10 and 772,332,269.30 is: 1,158,498,403.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,010,709.40 : 1,681,516,064.10 = 772,332,269.30 : x
  2. Step 2: Convert to fraction form
    1,121,010,709.40/1,681,516,064.10 = 772,332,269.30/x
  3. Step 3: Cross multiply
    1,121,010,709.40x = 1,681,516,064.10 × 772,332,269.30
  4. Step 4: Simplify right side
    1,121,010,709.40x = 1,298,689,117,650,757,120
  5. Step 5: Solve for x
    x = 1,298,689,117,650,757,120/1,121,010,709.40
  6. Step 6: Final answer
    x = 1,158,498,403.95

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Double scale
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Similar ratio
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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.