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Finding the Fourth Proportional to 540,344.70, 745,626.66 and 310,840.92

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Solution

The fourth proportional to 540,344.70, 745,626.66 and 310,840.92 is: 428,932.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,344.70 : 745,626.66 = 310,840.92 : x
  2. Step 2: Convert to fraction form
    540,344.70/745,626.66 = 310,840.92/x
  3. Step 3: Cross multiply
    540,344.70x = 745,626.66 × 310,840.92
  4. Step 4: Simplify right side
    540,344.70x = 231,771,276,970.93
  5. Step 5: Solve for x
    x = 231,771,276,970.93/540,344.70
  6. Step 6: Final answer
    x = 428,932.27

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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.