Home / 680,620.98-1,020,931.59-280,822.50

Finding the Fourth Proportional to 680,620.98, 1,020,931.59 and 280,822.50

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Solution

The fourth proportional to 680,620.98, 1,020,931.59 and 280,822.50 is: 421,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,620.98 : 1,020,931.59 = 280,822.50 : x
  2. Step 2: Convert to fraction form
    680,620.98/1,020,931.59 = 280,822.50/x
  3. Step 3: Cross multiply
    680,620.98x = 1,020,931.59 × 280,822.50
  4. Step 4: Simplify right side
    680,620.98x = 286,700,561,432.78
  5. Step 5: Solve for x
    x = 286,700,561,432.78/680,620.98
  6. Step 6: Final answer
    x = 421,233.80

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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.