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Finding the Fourth Proportional to 575,072.16, 793,612.80 and 320,438.88

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Solution

The fourth proportional to 575,072.16, 793,612.80 and 320,438.88 is: 442,213.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,072.16 : 793,612.80 = 320,438.88 : x
  2. Step 2: Convert to fraction form
    575,072.16/793,612.80 = 320,438.88/x
  3. Step 3: Cross multiply
    575,072.16x = 793,612.80 × 320,438.88
  4. Step 4: Simplify right side
    575,072.16x = 254,304,396,785.66
  5. Step 5: Solve for x
    x = 254,304,396,785.66/575,072.16
  6. Step 6: Final answer
    x = 442,213.02

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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.