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Finding the Fourth Proportional to 572,900.96, 790,625.76 and 391,992.32

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Solution

The fourth proportional to 572,900.96, 790,625.76 and 391,992.32 is: 540,964.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,900.96 : 790,625.76 = 391,992.32 : x
  2. Step 2: Convert to fraction form
    572,900.96/790,625.76 = 391,992.32/x
  3. Step 3: Cross multiply
    572,900.96x = 790,625.76 × 391,992.32
  4. Step 4: Simplify right side
    572,900.96x = 309,919,225,914.16
  5. Step 5: Solve for x
    x = 309,919,225,914.16/572,900.96
  6. Step 6: Final answer
    x = 540,964.75

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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.