Home / 492,947.07-680,298.47-278,008.71

Finding the Fourth Proportional to 492,947.07, 680,298.47 and 278,008.71

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Solution

The fourth proportional to 492,947.07, 680,298.47 and 278,008.71 is: 383,669.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,947.07 : 680,298.47 = 278,008.71 : x
  2. Step 2: Convert to fraction form
    492,947.07/680,298.47 = 278,008.71/x
  3. Step 3: Cross multiply
    492,947.07x = 680,298.47 × 278,008.71
  4. Step 4: Simplify right side
    492,947.07x = 189,128,898,669.63
  5. Step 5: Solve for x
    x = 189,128,898,669.63/492,947.07
  6. Step 6: Final answer
    x = 383,669.79

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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.