Home / 851,011,200.30-1,276,516,800.45-305,770,521.90

Finding the Fourth Proportional to 851,011,200.30, 1,276,516,800.45 and 305,770,521.90

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Solution

The fourth proportional to 851,011,200.30, 1,276,516,800.45 and 305,770,521.90 is: 458,655,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,011,200.30 : 1,276,516,800.45 = 305,770,521.90 : x
  2. Step 2: Convert to fraction form
    851,011,200.30/1,276,516,800.45 = 305,770,521.90/x
  3. Step 3: Cross multiply
    851,011,200.30x = 1,276,516,800.45 × 305,770,521.90
  4. Step 4: Simplify right side
    851,011,200.30x = 390,321,208,287,714,624
  5. Step 5: Solve for x
    x = 390,321,208,287,714,624/851,011,200.30
  6. Step 6: Final answer
    x = 458,655,782.85

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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.