Home / 680,500.50-1,020,064.56-427,961.46

Finding the Fourth Proportional to 680,500.50, 1,020,064.56 and 427,961.46

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Solution

The fourth proportional to 680,500.50, 1,020,064.56 and 427,961.46 is: 641,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,500.50 : 1,020,064.56 = 427,961.46 : x
  2. Step 2: Convert to fraction form
    680,500.50/1,020,064.56 = 427,961.46/x
  3. Step 3: Cross multiply
    680,500.50x = 1,020,064.56 × 427,961.46
  4. Step 4: Simplify right side
    680,500.50x = 436,548,318,391.86
  5. Step 5: Solve for x
    x = 436,548,318,391.86/680,500.50
  6. Step 6: Final answer
    x = 641,510.65

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1.5x scale

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.