Home / 858,253,505.10-1,287,572,163.45-312,995,039.10

Finding the Fourth Proportional to 858,253,505.10, 1,287,572,163.45 and 312,995,039.10

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Solution

The fourth proportional to 858,253,505.10, 1,287,572,163.45 and 312,995,039.10 is: 469,562,544.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,253,505.10 : 1,287,572,163.45 = 312,995,039.10 : x
  2. Step 2: Convert to fraction form
    858,253,505.10/1,287,572,163.45 = 312,995,039.10/x
  3. Step 3: Cross multiply
    858,253,505.10x = 1,287,572,163.45 × 312,995,039.10
  4. Step 4: Simplify right side
    858,253,505.10x = 403,003,699,643,104,384
  5. Step 5: Solve for x
    x = 403,003,699,643,104,384/858,253,505.10
  6. Step 6: Final answer
    x = 469,562,544.46

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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.