Home / 993,079.80-1,490,235.30-520,104.60

Finding the Fourth Proportional to 993,079.80, 1,490,235.30 and 520,104.60

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Solution

The fourth proportional to 993,079.80, 1,490,235.30 and 520,104.60 is: 780,479.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,079.80 : 1,490,235.30 = 520,104.60 : x
  2. Step 2: Convert to fraction form
    993,079.80/1,490,235.30 = 520,104.60/x
  3. Step 3: Cross multiply
    993,079.80x = 1,490,235.30 × 520,104.60
  4. Step 4: Simplify right side
    993,079.80x = 775,078,234,612.38
  5. Step 5: Solve for x
    x = 775,078,234,612.38/993,079.80
  6. Step 6: Final answer
    x = 780,479.31

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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.