Home / 807,139.71-1,113,960.47-521,491.05

Finding the Fourth Proportional to 807,139.71, 1,113,960.47 and 521,491.05

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Solution

The fourth proportional to 807,139.71, 1,113,960.47 and 521,491.05 is: 719,727.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,139.71 : 1,113,960.47 = 521,491.05 : x
  2. Step 2: Convert to fraction form
    807,139.71/1,113,960.47 = 521,491.05/x
  3. Step 3: Cross multiply
    807,139.71x = 1,113,960.47 × 521,491.05
  4. Step 4: Simplify right side
    807,139.71x = 580,920,412,551.34
  5. Step 5: Solve for x
    x = 580,920,412,551.34/807,139.71
  6. Step 6: Final answer
    x = 719,727.21

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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.