Home / 680,520.30-1,020,780.45-348,744.30

Finding the Fourth Proportional to 680,520.30, 1,020,780.45 and 348,744.30

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Solution

The fourth proportional to 680,520.30, 1,020,780.45 and 348,744.30 is: 523,116.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,520.30 : 1,020,780.45 = 348,744.30 : x
  2. Step 2: Convert to fraction form
    680,520.30/1,020,780.45 = 348,744.30/x
  3. Step 3: Cross multiply
    680,520.30x = 1,020,780.45 × 348,744.30
  4. Step 4: Simplify right side
    680,520.30x = 355,991,363,488.94
  5. Step 5: Solve for x
    x = 355,991,363,488.94/680,520.30
  6. Step 6: Final answer
    x = 523,116.45

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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.