Home / 860,520.09-1,290,730.86-328,094.94

Finding the Fourth Proportional to 860,520.09, 1,290,730.86 and 328,094.94

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Solution

The fourth proportional to 860,520.09, 1,290,730.86 and 328,094.94 is: 492,123.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,520.09 : 1,290,730.86 = 328,094.94 : x
  2. Step 2: Convert to fraction form
    860,520.09/1,290,730.86 = 328,094.94/x
  3. Step 3: Cross multiply
    860,520.09x = 1,290,730.86 × 328,094.94
  4. Step 4: Simplify right side
    860,520.09x = 423,482,264,067.85
  5. Step 5: Solve for x
    x = 423,482,264,067.85/860,520.09
  6. Step 6: Final answer
    x = 492,123.62

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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.