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Finding the Fourth Proportional to 471,992.30, 707,988.45 and 340,116.20

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Solution

The fourth proportional to 471,992.30, 707,988.45 and 340,116.20 is: 510,174.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,992.30 : 707,988.45 = 340,116.20 : x
  2. Step 2: Convert to fraction form
    471,992.30/707,988.45 = 340,116.20/x
  3. Step 3: Cross multiply
    471,992.30x = 707,988.45 × 340,116.20
  4. Step 4: Simplify right side
    471,992.30x = 240,798,341,257.89
  5. Step 5: Solve for x
    x = 240,798,341,257.89/471,992.30
  6. Step 6: Final answer
    x = 510,174.30

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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.