Home / 780,557.31-1,171,278.84-307,574.82

Finding the Fourth Proportional to 780,557.31, 1,171,278.84 and 307,574.82

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Solution

The fourth proportional to 780,557.31, 1,171,278.84 and 307,574.82 is: 461,536.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,557.31 : 1,171,278.84 = 307,574.82 : x
  2. Step 2: Convert to fraction form
    780,557.31/1,171,278.84 = 307,574.82/x
  3. Step 3: Cross multiply
    780,557.31x = 1,171,278.84 × 307,574.82
  4. Step 4: Simplify right side
    780,557.31x = 360,255,878,382.81
  5. Step 5: Solve for x
    x = 360,255,878,382.81/780,557.31
  6. Step 6: Final answer
    x = 461,536.74

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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.