Home / 579,465.45-869,437.32-312,912.06

Finding the Fourth Proportional to 579,465.45, 869,437.32 and 312,912.06

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Solution

The fourth proportional to 579,465.45, 869,437.32 and 312,912.06 is: 469,497.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,465.45 : 869,437.32 = 312,912.06 : x
  2. Step 2: Convert to fraction form
    579,465.45/869,437.32 = 312,912.06/x
  3. Step 3: Cross multiply
    579,465.45x = 869,437.32 × 312,912.06
  4. Step 4: Simplify right side
    579,465.45x = 272,057,422,842.08
  5. Step 5: Solve for x
    x = 272,057,422,842.08/579,465.45
  6. Step 6: Final answer
    x = 469,497.23

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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.