Home / 680,498.49-1,020,061.56-427,959.45

Finding the Fourth Proportional to 680,498.49, 1,020,061.56 and 427,959.45

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Solution

The fourth proportional to 680,498.49, 1,020,061.56 and 427,959.45 is: 641,507.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,498.49 : 1,020,061.56 = 427,959.45 : x
  2. Step 2: Convert to fraction form
    680,498.49/1,020,061.56 = 427,959.45/x
  3. Step 3: Cross multiply
    680,498.49x = 1,020,061.56 × 427,959.45
  4. Step 4: Simplify right side
    680,498.49x = 436,544,984,183.74
  5. Step 5: Solve for x
    x = 436,544,984,183.74/680,498.49
  6. Step 6: Final answer
    x = 641,507.65

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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.