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Finding the Fourth Proportional to 540,457.45, 745,905.38 and 311,010.03

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Solution

The fourth proportional to 540,457.45, 745,905.38 and 311,010.03 is: 429,236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,457.45 : 745,905.38 = 311,010.03 : x
  2. Step 2: Convert to fraction form
    540,457.45/745,905.38 = 311,010.03/x
  3. Step 3: Cross multiply
    540,457.45x = 745,905.38 × 311,010.03
  4. Step 4: Simplify right side
    540,457.45x = 231,984,053,055.91
  5. Step 5: Solve for x
    x = 231,984,053,055.91/540,457.45
  6. Step 6: Final answer
    x = 429,236.48

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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.