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Finding the Fourth Proportional to 610,772.06, 842,515.26 and 380,930.31

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Solution

The fourth proportional to 610,772.06, 842,515.26 and 380,930.31 is: 525,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,772.06 : 842,515.26 = 380,930.31 : x
  2. Step 2: Convert to fraction form
    610,772.06/842,515.26 = 380,930.31/x
  3. Step 3: Cross multiply
    610,772.06x = 842,515.26 × 380,930.31
  4. Step 4: Simplify right side
    610,772.06x = 320,939,597,266.88
  5. Step 5: Solve for x
    x = 320,939,597,266.88/610,772.06
  6. Step 6: Final answer
    x = 525,465.42

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Half scale
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Double scale
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Similar ratio
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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.