Home / 852,433.47-1,278,507.65-312,578.19

Finding the Fourth Proportional to 852,433.47, 1,278,507.65 and 312,578.19

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Solution

The fourth proportional to 852,433.47, 1,278,507.65 and 312,578.19 is: 468,815.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,433.47 : 1,278,507.65 = 312,578.19 : x
  2. Step 2: Convert to fraction form
    852,433.47/1,278,507.65 = 312,578.19/x
  3. Step 3: Cross multiply
    852,433.47x = 1,278,507.65 × 312,578.19
  4. Step 4: Simplify right side
    852,433.47x = 399,633,605,575.26
  5. Step 5: Solve for x
    x = 399,633,605,575.26/852,433.47
  6. Step 6: Final answer
    x = 468,815.01

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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.