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Finding the Fourth Proportional to 554,982, 765,880.70 and 300,338.66

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Solution

The fourth proportional to 554,982, 765,880.70 and 300,338.66 is: 414,470.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,982 : 765,880.70 = 300,338.66 : x
  2. Step 2: Convert to fraction form
    554,982/765,880.70 = 300,338.66/x
  3. Step 3: Cross multiply
    554,982x = 765,880.70 × 300,338.66
  4. Step 4: Simplify right side
    554,982x = 230,023,577,826.77
  5. Step 5: Solve for x
    x = 230,023,577,826.77/554,982
  6. Step 6: Final answer
    x = 414,470.34

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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.