Home / 781,712.54-1,077,288.99-626,487.51

Finding the Fourth Proportional to 781,712.54, 1,077,288.99 and 626,487.51

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Solution

The fourth proportional to 781,712.54, 1,077,288.99 and 626,487.51 is: 863,371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,712.54 : 1,077,288.99 = 626,487.51 : x
  2. Step 2: Convert to fraction form
    781,712.54/1,077,288.99 = 626,487.51/x
  3. Step 3: Cross multiply
    781,712.54x = 1,077,288.99 × 626,487.51
  4. Step 4: Simplify right side
    781,712.54x = 674,908,096,895.52
  5. Step 5: Solve for x
    x = 674,908,096,895.52/781,712.54
  6. Step 6: Final answer
    x = 863,371.21

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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.