Home / 347,815.40-521,723.10-326,820.20

Finding the Fourth Proportional to 347,815.40, 521,723.10 and 326,820.20

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Solution

The fourth proportional to 347,815.40, 521,723.10 and 326,820.20 is: 490,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,815.40 : 521,723.10 = 326,820.20 : x
  2. Step 2: Convert to fraction form
    347,815.40/521,723.10 = 326,820.20/x
  3. Step 3: Cross multiply
    347,815.40x = 521,723.10 × 326,820.20
  4. Step 4: Simplify right side
    347,815.40x = 170,509,647,886.62
  5. Step 5: Solve for x
    x = 170,509,647,886.62/347,815.40
  6. Step 6: Final answer
    x = 490,230.30

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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.