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Finding the Fourth Proportional to 540,392.76, 745,355.25 and 379,283.76

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Solution

The fourth proportional to 540,392.76, 745,355.25 and 379,283.76 is: 523,140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,392.76 : 745,355.25 = 379,283.76 : x
  2. Step 2: Convert to fraction form
    540,392.76/745,355.25 = 379,283.76/x
  3. Step 3: Cross multiply
    540,392.76x = 745,355.25 × 379,283.76
  4. Step 4: Simplify right side
    540,392.76x = 282,701,141,755.74
  5. Step 5: Solve for x
    x = 282,701,141,755.74/540,392.76
  6. Step 6: Final answer
    x = 523,140.14

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Double scale
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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.