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Finding the Fourth Proportional to 545,388.12, 752,626.62 and 319,071.96

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Solution

The fourth proportional to 545,388.12, 752,626.62 and 319,071.96 is: 440,314.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,388.12 : 752,626.62 = 319,071.96 : x
  2. Step 2: Convert to fraction form
    545,388.12/752,626.62 = 319,071.96/x
  3. Step 3: Cross multiply
    545,388.12x = 752,626.62 × 319,071.96
  4. Step 4: Simplify right side
    545,388.12x = 240,142,050,791.58
  5. Step 5: Solve for x
    x = 240,142,050,791.58/545,388.12
  6. Step 6: Final answer
    x = 440,314.05

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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.