Home / 851,011,107.80-1,276,516,661.70-305,770,429.40

Finding the Fourth Proportional to 851,011,107.80, 1,276,516,661.70 and 305,770,429.40

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Solution

The fourth proportional to 851,011,107.80, 1,276,516,661.70 and 305,770,429.40 is: 458,655,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,011,107.80 : 1,276,516,661.70 = 305,770,429.40 : x
  2. Step 2: Convert to fraction form
    851,011,107.80/1,276,516,661.70 = 305,770,429.40/x
  3. Step 3: Cross multiply
    851,011,107.80x = 1,276,516,661.70 × 305,770,429.40
  4. Step 4: Simplify right side
    851,011,107.80x = 390,321,047,784,263,488
  5. Step 5: Solve for x
    x = 390,321,047,784,263,488/851,011,107.80
  6. Step 6: Final answer
    x = 458,655,644.10

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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.