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Finding the Fourth Proportional to 540,427.48, 745,770.02 and 311,020.06

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Solution

The fourth proportional to 540,427.48, 745,770.02 and 311,020.06 is: 429,196.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,427.48 : 745,770.02 = 311,020.06 : x
  2. Step 2: Convert to fraction form
    540,427.48/745,770.02 = 311,020.06/x
  3. Step 3: Cross multiply
    540,427.48x = 745,770.02 × 311,020.06
  4. Step 4: Simplify right side
    540,427.48x = 231,949,436,366.60
  5. Step 5: Solve for x
    x = 231,949,436,366.60/540,427.48
  6. Step 6: Final answer
    x = 429,196.23

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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.