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Finding the Fourth Proportional to 519,555.91, 717,482.30 and 491,250.83

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Solution

The fourth proportional to 519,555.91, 717,482.30 and 491,250.83 is: 678,394.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,555.91 : 717,482.30 = 491,250.83 : x
  2. Step 2: Convert to fraction form
    519,555.91/717,482.30 = 491,250.83/x
  3. Step 3: Cross multiply
    519,555.91x = 717,482.30 × 491,250.83
  4. Step 4: Simplify right side
    519,555.91x = 352,463,771,797.90
  5. Step 5: Solve for x
    x = 352,463,771,797.90/519,555.91
  6. Step 6: Final answer
    x = 678,394.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.