Home / 929,093.28-1,282,071.84-521,138.40

Finding the Fourth Proportional to 929,093.28, 1,282,071.84 and 521,138.40

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Solution

The fourth proportional to 929,093.28, 1,282,071.84 and 521,138.40 is: 719,127.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,093.28 : 1,282,071.84 = 521,138.40 : x
  2. Step 2: Convert to fraction form
    929,093.28/1,282,071.84 = 521,138.40/x
  3. Step 3: Cross multiply
    929,093.28x = 1,282,071.84 × 521,138.40
  4. Step 4: Simplify right side
    929,093.28x = 668,136,867,382.66
  5. Step 5: Solve for x
    x = 668,136,867,382.66/929,093.28
  6. Step 6: Final answer
    x = 719,127.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.