Home / 858,787.86-1,288,384.10-259,753.98

Finding the Fourth Proportional to 858,787.86, 1,288,384.10 and 259,753.98

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Solution

The fourth proportional to 858,787.86, 1,288,384.10 and 259,753.98 is: 389,692.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,787.86 : 1,288,384.10 = 259,753.98 : x
  2. Step 2: Convert to fraction form
    858,787.86/1,288,384.10 = 259,753.98/x
  3. Step 3: Cross multiply
    858,787.86x = 1,288,384.10 × 259,753.98
  4. Step 4: Simplify right side
    858,787.86x = 334,662,897,743.72
  5. Step 5: Solve for x
    x = 334,662,897,743.72/858,787.86
  6. Step 6: Final answer
    x = 389,692.16

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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.