Home / 865,320.20-1,297,980.30-492,072.20

Finding the Fourth Proportional to 865,320.20, 1,297,980.30 and 492,072.20

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Solution

The fourth proportional to 865,320.20, 1,297,980.30 and 492,072.20 is: 738,108.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,320.20 : 1,297,980.30 = 492,072.20 : x
  2. Step 2: Convert to fraction form
    865,320.20/1,297,980.30 = 492,072.20/x
  3. Step 3: Cross multiply
    865,320.20x = 1,297,980.30 × 492,072.20
  4. Step 4: Simplify right side
    865,320.20x = 638,700,021,777.66
  5. Step 5: Solve for x
    x = 638,700,021,777.66/865,320.20
  6. Step 6: Final answer
    x = 738,108.30

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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.