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Finding the Fourth Proportional to 554,977.32, 765,867.39 and 300,328.71

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Solution

The fourth proportional to 554,977.32, 765,867.39 and 300,328.71 is: 414,452.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,977.32 : 765,867.39 = 300,328.71 : x
  2. Step 2: Convert to fraction form
    554,977.32/765,867.39 = 300,328.71/x
  3. Step 3: Cross multiply
    554,977.32x = 765,867.39 × 300,328.71
  4. Step 4: Simplify right side
    554,977.32x = 230,011,965,269.77
  5. Step 5: Solve for x
    x = 230,011,965,269.77/554,977.32
  6. Step 6: Final answer
    x = 414,452.91

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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.