Home / 1,245,620,400.30-1,868,430,600.45-727,784,289.90

Finding the Fourth Proportional to 1,245,620,400.30, 1,868,430,600.45 and 727,784,289.90

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Solution

The fourth proportional to 1,245,620,400.30, 1,868,430,600.45 and 727,784,289.90 is: 1,091,676,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,620,400.30 : 1,868,430,600.45 = 727,784,289.90 : x
  2. Step 2: Convert to fraction form
    1,245,620,400.30/1,868,430,600.45 = 727,784,289.90/x
  3. Step 3: Cross multiply
    1,245,620,400.30x = 1,868,430,600.45 × 727,784,289.90
  4. Step 4: Simplify right side
    1,245,620,400.30x = 1,359,814,437,775,933,952
  5. Step 5: Solve for x
    x = 1,359,814,437,775,933,952/1,245,620,400.30
  6. Step 6: Final answer
    x = 1,091,676,434.85

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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.