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Finding the Fourth Proportional to 575,389.20, 794,047.56 and 320,712.96

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Solution

The fourth proportional to 575,389.20, 794,047.56 and 320,712.96 is: 442,589.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,389.20 : 794,047.56 = 320,712.96 : x
  2. Step 2: Convert to fraction form
    575,389.20/794,047.56 = 320,712.96/x
  3. Step 3: Cross multiply
    575,389.20x = 794,047.56 × 320,712.96
  4. Step 4: Simplify right side
    575,389.20x = 254,661,343,348.38
  5. Step 5: Solve for x
    x = 254,661,343,348.38/575,389.20
  6. Step 6: Final answer
    x = 442,589.72

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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.