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Finding the Fourth Proportional to 540,390.39, 745,351.97 and 379,281.39

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Solution

The fourth proportional to 540,390.39, 745,351.97 and 379,281.39 is: 523,136.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,390.39 : 745,351.97 = 379,281.39 : x
  2. Step 2: Convert to fraction form
    540,390.39/745,351.97 = 379,281.39/x
  3. Step 3: Cross multiply
    540,390.39x = 745,351.97 × 379,281.39
  4. Step 4: Simplify right side
    540,390.39x = 282,698,131,220.84
  5. Step 5: Solve for x
    x = 282,698,131,220.84/540,390.39
  6. Step 6: Final answer
    x = 523,136.86

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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.