Home / 845,315.40-1,267,838.16-312,715.26

Finding the Fourth Proportional to 845,315.40, 1,267,838.16 and 312,715.26

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Solution

The fourth proportional to 845,315.40, 1,267,838.16 and 312,715.26 is: 469,022.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,315.40 : 1,267,838.16 = 312,715.26 : x
  2. Step 2: Convert to fraction form
    845,315.40/1,267,838.16 = 312,715.26/x
  3. Step 3: Cross multiply
    845,315.40x = 1,267,838.16 × 312,715.26
  4. Step 4: Simplify right side
    845,315.40x = 396,472,339,842.32
  5. Step 5: Solve for x
    x = 396,472,339,842.32/845,315.40
  6. Step 6: Final answer
    x = 469,022.97

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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.