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Finding the Fourth Proportional to 659,642.80, 989,464.20 and 344,714.80

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Solution

The fourth proportional to 659,642.80, 989,464.20 and 344,714.80 is: 517,072.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,642.80 : 989,464.20 = 344,714.80 : x
  2. Step 2: Convert to fraction form
    659,642.80/989,464.20 = 344,714.80/x
  3. Step 3: Cross multiply
    659,642.80x = 989,464.20 × 344,714.80
  4. Step 4: Simplify right side
    659,642.80x = 341,082,953,810.16
  5. Step 5: Solve for x
    x = 341,082,953,810.16/659,642.80
  6. Step 6: Final answer
    x = 517,072.20

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Similar ratio
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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.