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Finding the Fourth Proportional to 774,439.76, 1,068,750.78 and 434,915.30

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Solution

The fourth proportional to 774,439.76, 1,068,750.78 and 434,915.30 is: 600,196.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,439.76 : 1,068,750.78 = 434,915.30 : x
  2. Step 2: Convert to fraction form
    774,439.76/1,068,750.78 = 434,915.30/x
  3. Step 3: Cross multiply
    774,439.76x = 1,068,750.78 × 434,915.30
  4. Step 4: Simplify right side
    774,439.76x = 464,816,066,108.93
  5. Step 5: Solve for x
    x = 464,816,066,108.93/774,439.76
  6. Step 6: Final answer
    x = 600,196.54

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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.