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Finding the Fourth Proportional to 572,674.80, 790,317.48 and 318,027.12

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Solution

The fourth proportional to 572,674.80, 790,317.48 and 318,027.12 is: 438,892.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,674.80 : 790,317.48 = 318,027.12 : x
  2. Step 2: Convert to fraction form
    572,674.80/790,317.48 = 318,027.12/x
  3. Step 3: Cross multiply
    572,674.80x = 790,317.48 × 318,027.12
  4. Step 4: Simplify right side
    572,674.80x = 251,342,392,050.06
  5. Step 5: Solve for x
    x = 251,342,392,050.06/572,674.80
  6. Step 6: Final answer
    x = 438,892.01

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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.