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Finding the Fourth Proportional to 575,679.40, 794,439.30 and 317,550.12

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Solution

The fourth proportional to 575,679.40, 794,439.30 and 317,550.12 is: 438,220.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,679.40 : 794,439.30 = 317,550.12 : x
  2. Step 2: Convert to fraction form
    575,679.40/794,439.30 = 317,550.12/x
  3. Step 3: Cross multiply
    575,679.40x = 794,439.30 × 317,550.12
  4. Step 4: Simplify right side
    575,679.40x = 252,274,295,047.72
  5. Step 5: Solve for x
    x = 252,274,295,047.72/575,679.40
  6. Step 6: Final answer
    x = 438,220.12

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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.