Home / 858,276,005.10-1,287,414,007.65-212,043,749.10

Finding the Fourth Proportional to 858,276,005.10, 1,287,414,007.65 and 212,043,749.10

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Solution

The fourth proportional to 858,276,005.10, 1,287,414,007.65 and 212,043,749.10 is: 318,065,623.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,276,005.10 : 1,287,414,007.65 = 212,043,749.10 : x
  2. Step 2: Convert to fraction form
    858,276,005.10/1,287,414,007.65 = 212,043,749.10/x
  3. Step 3: Cross multiply
    858,276,005.10x = 1,287,414,007.65 × 212,043,749.10
  4. Step 4: Simplify right side
    858,276,005.10x = 272,988,092,825,962,080
  5. Step 5: Solve for x
    x = 272,988,092,825,962,080/858,276,005.10
  6. Step 6: Final answer
    x = 318,065,623.65

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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.