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Finding the Fourth Proportional to 572,771.05, 859,518.34 and 320,217.20

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Solution

The fourth proportional to 572,771.05, 859,518.34 and 320,217.20 is: 480,528.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,771.05 : 859,518.34 = 320,217.20 : x
  2. Step 2: Convert to fraction form
    572,771.05/859,518.34 = 320,217.20/x
  3. Step 3: Cross multiply
    572,771.05x = 859,518.34 × 320,217.20
  4. Step 4: Simplify right side
    572,771.05x = 275,232,554,308.51
  5. Step 5: Solve for x
    x = 275,232,554,308.51/572,771.05
  6. Step 6: Final answer
    x = 480,528.05

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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.