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Finding the Fourth Proportional to 551,366.39, 760,975.76 and 379,140.14

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Solution

The fourth proportional to 551,366.39, 760,975.76 and 379,140.14 is: 523,275.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,366.39 : 760,975.76 = 379,140.14 : x
  2. Step 2: Convert to fraction form
    551,366.39/760,975.76 = 379,140.14/x
  3. Step 3: Cross multiply
    551,366.39x = 760,975.76 × 379,140.14
  4. Step 4: Simplify right side
    551,366.39x = 288,516,459,033.30
  5. Step 5: Solve for x
    x = 288,516,459,033.30/551,366.39
  6. Step 6: Final answer
    x = 523,275.38

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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.